New substituted metaaminophenols, a process for their preparation, hair-dyeing compositions containing them and a hair-dyeing process

ABSTRACT

A new substituted metaaminophenol of formula (I): ##STR1## wherein Z represents a monohydroxylated or polyhydroxylated hydrocarbon radical of 1 to 6 carbon atoms or an aminoalkyl radical of the formula: ##STR2## wherein n is an integer from 1 to 6 and R 1  and R 2 , which are identical or different, represent a hydrogen atom or an alkyl or hydroxyalkyl radical of 1 to 6 carbon atoms or an acyl radical of 1 to 4 carbon atoms, and R represents a hydrogen atom, an alkyl radical or monohydroxyalkyl or polyhydroxyalkyl, monocarbamylalkyl, dicarbamylalkyl, aminoalkyl, acyl, carbalkoxy, carbamyl or monoalkylcarbamyl radical, the abovementioned alkyl radicals containing 1 to 6 carbon atoms, or an acid salt thereof with the proviso that if R represents a hydrogen atom, Z cannot represent --CH 2  CH 2  OH is disclosed, together with a process for their preparation, hair-dyeing compositions containing them and a hair-dyeing process.

This is a division of appliation Ser. No. 385,496, filed July 26, 1989,which is a division of application Ser. No. 618,149, filed June 7, 1984,now U.S. Pat. No. 4,863,482.

The present invention relates to new substituted metaaminophenols. Thesecompounds can be used as couplers for oxidation hair dyeing, in thepresence of oxidation bases.

The invention also relates to a hair-dyeing process using compositionscontaining the metaaminophenols and a process for the preparation of thenew chemical compounds.

One object of the invention is to provide new chemical compounds whichcan be used as couplers in hair dyes to give strong colourations whichare stable to light, have a good resistance to weather and washing,provide compounds which can have a good degree of harmlessness andsatisfactory characteristics from the point of view of mutagenesis andwhich lead, by means of an oxidative reaction with oxidation bases in analkaline medium, to non-mutagenic indoaniline or indophenol derivatives.

The present invention provides a metaaminophenol of formula (I):##STR3## wherein Z represents a monohydroxylated or polyhydroxylatedhydrocarbon radical of 1 to 6 carbon atoms or an aminoalkyl radical ofthe formula: wherein n is an integer from 1 to 6 and R₁ and R₂, whichare identical or different, represent a hydrogen atom or an alkyl orhydroxyalkyl radical of 1 to 6 carbon atoms or an acyl radical of 1 to 4carbon atoms, and R represents a hydrogen atom, an alkyl radical or amonohydroxyalkyl or polyhydroxyalkyl, monocarbamylalkyl,dicarbamylalkyl, aminoalkyl, acyl, carbalkoxy, carbamyl ormonoalkylcarbamyl radical, the abovementioned alkyl radicals containing1 to 6 carbon atoms, and its acid salts, particularly the hydrochlorideor sulphate, with the proviso that if R represents a hydrogen atom, Zcannot represent --CH₂ CH₂ OH.

Preferably Z represents --CH₂ CH₂ OH, --CH₂ --CHOH--CH₂ OH, --CH₂--CHOH--CH₃, --CH₂ --CH₂ --NH₂, --CH₂ --CH₂ --NHCH₃, --CH₂ --CH₂--NHCOCH₃ or ##STR4##

R is preferably a formyl, acetyl or propionyl group if it is an acylradical or a hydrogen atom.

Chemical compounds similar to compounds of the present invention aredescribed in French Patent No. 1,543,690. However, these compounds aremetaaminophenols in which the substituent in the ortho position to thephenol group is OZ₁, wherein Z₁ is a radical containing a hydroxyl groupand an amine group at the end of the chain. In the compounds of theformula (I), the group Z is not derived from an alkanolamine but iseither a monohydroxylated or polyhydroxylated radical or an alkylamineradical. This difference in structure results in considerabledifferences in the properties. Compounds described in French Patent No.1,543,690 β-adrenergic blocking activity (therapy of cardiaccomplaints), whereas compounds of the formula (I) are essentially ofinterest in the field of hair dyeing.

The process for the preparation of the compounds of the formula (I) asherein described is novel and has considerable practical advantagescompared with the process of preparation described for the similarcompounds in French Patent No. 1,543,690. Furthermore, the processaccording to the invention also has a great advantage compared with theprocess described in U.S. Pat. No. 3,834,866 for metaaminophenolscontaining an OCH₃ substituent in the ortho position in which theprocess of manufacture described requires a nitration step at atemperature above 100° C., which results in the evolution of nitrousvapours and creates difficulties for manufacture on the industrialscale. The reaction of methanol with 3,4-methylenedioxy-1-nitrobenzenein the presence of potassium hydroxide is described in CHEM. PHARM.BULL., 3113-3116, 1978, Volume 26, but this reference does not describenor suggest the reaction of the more complex alcohol Y--CH₂ OH, in whichY has the meanings indicated earlier.

The compounds of formula (I) or their salts may be obtained by a processcomprising in a first step, reacting 3,4-methylenedioxy-1-nitrobenzene,in the presence of a strong base such as potassium hydroxide, with analcohol of the formula (II):

    Y--CH.sub.2 OH                                             (II)

wherein Y represents either a monohydroxyalkyl or polyhydroxyalkyl groupof 1 to 5 carbon atoms, or a group of the formula: ##STR5## wherein R₁and n have the meanings indicated above and R₃ represents a hydrogenatom or an alkyl radical of 1 to 3 carbon atoms and in a second step,the nitro group of the previously obtained compound of formula (III):##STR6## is reduced to give a compound of formula (IV): ##STR7## whereinY has the meaning indicated above; and if appropriate, in a third step,according to the desired compound of the formula (I), the compound offormula (IV) is converted by acid hydrolysis, especially withhydrochloric acid if Y comprises an acylated amine group, or bysubstitution of the extranuclear amine if Y contains an amine group, orby monosubstitution of the aromatic amine.

The reduction of the nitro group of compounds of the formula (III) ispreferably carried out using iron in an acetic acid medium or by usingcyclohexene in the presence of a palladium/charcoal catalyst.

If the compound of the formula (IV) in which Y contains an acylatedamine group, is subjected to hydrolysis with hydrochloric acid, acompound of the formula (V) is obtained: ##STR8## All the compounds ofthe formulae (IV) and (V), together with their derivatives obtained bysubstitution of the aromatic or extranuclear amine, cover all thecompounds of formula (I). The aromatic or extranuclear amines may besubstituted by reaction with, for example, ethyl bromide, glycolbromohydrin, ethyl chloroformate, β-chloroacetamide or acetic anhydride.

The present invention also provides a new oxidation dyeing compositionfor the hair, comprising at least one oxidation base, a cosmeticcarrier, and at least one coupler of formula (I) and/or thecorresponding acid salt.

In a preferred embodiment the dyeing composition according to theinvention comprises at least one oxidation base comprising (A) theparaphenylene diamines or paraaminophenols of formula (VI): ##STR9## oracid salts of these compounds, wherein R'₁, R'₂, R'₃ and R'₄independently of one another represent a hydrogen atom, a halogen atomor an alkyl, hydroxyalkyl, alkoxy or hydroxyalkoxy radical containing 1to 4 carbon atoms, and Y' represents a hydroxyl group or an NR'₅ R'₆group, wherein R'₅ and R'₆ independently of one another are a hydrogenatom or an alkyl, monohydroxyalkyl or polyhydroxyalkyl, carbamylalkyl,mesylaminoalkyl or alkoxyalkyl radical of 1 to 4 carbon atoms; or

(B) Heterocyclic oxidation bases and the corresponding acid salts, inparticular 2,5-diaminopyridine.

Examples of oxidation bases of the formula (VI) are:paraphenylenediamine, paratoluylenediamine, chloroparaphenylenediamine,2,6-dimethylparaphenylenediamine, N-β-hydroxyethylparaphenylenediamine,N-carbamylmethylparaphenylenediamine, 2,5-diaminophenoxyethanol,N,N-di-β-hydroxyethylparaphenylenediamine,N-carbamylmethyl-N-ethylparaphenylenediamine,N-methoxyethylparaphenylenediamine, 2,5-diaminophenylethanol,paraaminophenol, 2-chloro-4-aminophenol, 3-chloro-4-aminophenol,N-methylparaaminophenol and also the salts of the abovementionedcompounds, such as the sulphates and hydrochlorides.

The compositions according to the invention can also contain additionalcouplers other than those of the formula (I), in particularmetadiphenols, metaaminophenols, metadiamines or heterocyclic couplersand their acid salts.

Examples of metaaminophenols are: metaaminophenol,2-methyl-5-aminophenol, 2-methyl-5-N-methylaminophenol,2-methyl-5-N-β-hydroxyethylaminophenol,2-methyl-5-N-carbamylmethylaminophenol and2-methyl-5-N-acetylaminophenol. Examples of metadiphenols are resorcinoland 2-methylresorcinol. Examples of metadiamines are:2,4-diaminophenoxyethanol, 2,4-diaminophenoxyethylamine,1-(2',4'-diaminophenoxy)propane-2,3-diol and2-N-β-hydroxyethylamino-4-aminoanisole. 2,6-Diaminopyridine is anexample of a heterocyclic coupler.

The dyeing compositions according to the invention may also contain atleast one direct dyestuff, particularly nitro dyestuffs of the benzeneseries, anthraquinone dyestuffs, indophenols or indoanilines. Examplesof direct dyestuffs are 2-methyl-4-amino-5-nitrophenol,3-N-methylamino-4-nitrophenoxyethanol,2-N-β-hydroxyethylamino-5-nitroanisole, 2-amino-3-nitrophenol,3-nitro-4-N-β-hydroxyethylaminophenol,3-nitro-4-N'-methylamino-N,N-di-β-hydroxyethylaniline,3-nitro-4-amino-N-β-hydroxyethylaniline,2-methyl-4-amino-5-nitro-N-β-hydroxyethylaniline and1,4,5,8-tetraaminoanthraquinone.

In a preferred embodiment, the dyeing composition according to theinvention contains from 0.01% to 4% by weight of compound(s) of theformula (I) (and/or of its (their) acid salts), relative to the totalweight of the composition.

The cosmetic vehicle of the composition according to the inventioncomprises at least one customary adjuvant, for example water, solvents,penetrating agents, surface-active agents, thickeners, antioxidants,alkalizing or acidifying agents, sequestering agents, perfumes,film-forming products and treating agents.

The pH of the composition according to the invention is preferably from8 to 11.5. Examples of alkalizing agents are: aqueous ammonia,alkylamines such as ethylamine or triethylamine, alkanolamines such asmono-, di- or triethanolamine, alkylalkanolamines such asmethyldiethanolamine, hydroxides of sodium or potassium and carbonatesof sodium, potassium or ammonium. Examples of acidifying agents are:lactic acid, acetic acid, tartaric acid and phosphoric acid.

Anionic, cationic, non-ionic or amphoteric surface-active agents, ormixtures thereof, can be used according to the invention. Examples ofsurface-active agents are: alkylbenzenesulphonates,alkylnaphthalenesulphonates, sulphates, ether-sulphates and sulphonatesof fatty alcohols, quaternary ammonium salts such astrimethylcetylammonium bromide and cetylpyridinium bromide, fatty aciddiethanolamides and polyethoxylated or polyglycerolated acids, alcoholsor alkylphenols. Preferably, the surface-active agents are present inthe composition according to the invention in a proportion of from 0.5to 55% by weight and advantageously of from 4 to 40% by weight, relativeto the total weight of the composition.

Organic solvents can also be added to the composition according to theinvention, for example ethanol, isopropanol, glycerol, glycols and theirethers, such as 2-butoxyethanol, ethylene glycol, propylene glycol, themonoethyl ether and the monomethyl ether of diethylene glycol, andanalogous solvents. The solvents can advantageously be present in thecomposition in a proportion from 1 to 40% by weight and preferably offrom 5 to 30% by weight, relative to the total weight of thecomposition.

Examples of thickening products which can be added to the compositionaccording to the invention are sodium alginate, gum arabic, cellulosederivatives such as methylcellulose, hydroxyethylcellulose,hydroxypropylmethylcellulose and the sodium salt ofcarboxymethylcellulose, and acrylic acid polymers; it is also possibleto use inorganic thickeners such as bentonite. Preferably, thethickeners are present in a proportion from 0.5 to 5% by weight,relative to the total weight of the composition, and advantageously from0.5 to 3% by weight.

Examples of antioxidants which can be added to the composition accordingto the invention are sodium sulphite, thioglycolic acid, sodiumbisulphite, ascorbic acid and hydroquinone. These antioxidants arepreferably present in the composition in a proportion of from 0.05 to1.5% by weight, relative to the total weight of the composition.

As the dyeing composition according to the invention is an oxidativedyeing composition, it generally contains, at the time of use, oxidizingagents such as hydrogen peroxide, urea peroxide or per-salts such asammonium persulphate.

The dyeing composition according to the invention may, for example, bepresented in the form of a liquid, cream, gel or an aerosol or in anyother form suitable for dyeing keratin fibres.

The present invention also provides a new hair-dyeing process, in which,at the time of use, a sufficient quantity of oxidizing agent(s) is mixedwith a dyeing composition as defined above, the mixture is left to acton the hair for a period, preferably from 10 to 45 minutes andpreferably at a temperature from 10° to 50° C., and the hair is rinsed,optionally washed and rinsed again, and dried.

An advantage of the couplers of the formula (I) is that, depending onthe structure of the coupler and the associated oxidation base,indoanilines or indophenols can be formed on the hair in an oxidizingalkaline medium, for example in an ammoniacal medium in the presence ofhydrogen per oxide. These indoanilines or indophenols are capable ofgiving the hair various colourations, for example, yellow, red, purpleor blue. Thus it is possible to obtain the majority of possible hueswithin the range of colourations. To illustrate this property, a fewexamples of colourations covering the whole range of shades areindicated in Table I below.

                  TABLE I                                                         ______________________________________                                        Association of coupler (I) + oxidation base                                   (VI) in an ammoniacal medium + H.sub.2 O.sub.2                                                         Colouration                                          ______________________________________                                        2-Hydroxy-4-aminophenoxyethanol hydrate and                                                            Orange                                               paraaminophenol                                                               2-Hydroxy-4-aminophenoxyethanol hydrate and                                                            Red                                                  paraphenylenediamine                                                          2-Hydroxy-4-N-ethylaminophenoxyethanol and                                                             Red-purple                                           paratoluylenediamine                                                          2-Hydroxy-4-acetylaminophenoxyethanol and                                                              Purple                                               paraphenylenediamine                                                          2-Hydroxy-4-acetylaminophenoxyethanol and                                                              Purple-blue                                          paratoluylenediamine                                                          2-Hydroxy-4-acetylaminophenoxyethanol and                                                              Blue                                                 N,N-di-β-hydroxyethylparaphenylenediamine                                ______________________________________                                    

Another advantage of the couplers of the formula (I) is the fact that,at least in some cases, if they are associated in equimolecularquantities with certain oxidation bases, they make it possible to obtaindark colourations which are essential for obtaining dyes correspondingto natural colourations, and which those skilled in the art call "thebackground". Hitherto, the background has generally been obtained bymeans of paraphenylenediamines taken by themselves in an oxidizingmedium and the couplers were only involved, in association withoxidation bases, for shading the background. By contrast, the couplersof the formula (I) make it possible, in association with oxidationbases, to produce a background; this is particularly advantageousbecause the couplers according to the invention are substantiallyharmless and give rise to non-mutagenic indoanilines and indophenols.These advantages are not always achieved with the background productspreviously used. Natural dark hues (for example more or less copperychestnut or purplish grey or black) are obtained, in particular, whenthe couplers of the formula (I) in which the radical R represents ahydrogen atom or a substituted or unsubstituted alkyl radical areassociated in equimolecular quantities with paraphenylenediamines andparaaminophenols. For example, the association of paraphenylenediamineand 2-hydroxy-4-aminophenoxyethanol in equimolecular quantities gives achestnut colouration on 90% naturally white hair, whereas an analogouscoupler of the state of the art, namely 2-methyl-5-aminophenol, leads toan intense purplish red colouration under the same conditions and theassociation of N,N-di-β-hydroxyethylparaphenylenediamine inequimolecular quantities with the same coupler of the formula (I) as inthe previous example leads to a black colouration with violet highlightson bleached hair. Replacement of the coupler of the formula (I) with thesame coupler of the state of the art as in the previous example leads toa very bright purple colouration under the same conditions. Thispossibility of producing dark backgrounds is unexpected for thoseskilled in the art, who normally use couplers as toners, and it isparticularly advantageous on account of the substantial harmlessness ofthe couplers and of the indoaniline or indophenol compounds to whichthey lead. As is known, those skilled in the art are unable to predict,from the similar compounds of the state of the art, what the mutageniccharacteristics of a new compound will be. It has been found, accordingto the invention, that the new compounds of the formula (I) are notmutagenic (AMES test on SALMONELLA TYPHIMURIUM (strains TA 1535, 1537,1538, 98, 100) with or without activation (S₉ support activated witharochlor)). Furthermore, it has been found that the compounds of theformula (I) give rise to non-mutagenic indoanilines and indophenols inthe oxidizing alkaline medium in which they are used during hair dyeing,and this is totally surprising when it is known that the indoanilines orindophenols obtained from the similar couplers described in U.S. Pat.No. 3,834,866 are particularly mutagenic (CHEMICAL ABSTRACT SELECTS -PROTON MAGNETIC RESONANCE, Volume 18, 1981, page 1, 95: 75096f).

Couplers of formula (I) make it possible to obtain colourations whichare substantially stable to light, weather and washing. This quality isparticularly marked for the couplers of the formula (I) in which Rrepresents a hydrogen atom or an alkyl, hydroxyalkyl or carbamylalkylradical. In particular, it is very desirable to obtain colourationswhich are both warm (coppery mahogany) and of very good quality. This isthe case when 2-hydroxy-4-aminophenoxyethanol is associated withparaaminophenols.

The invention will be further described with the following Examples:

EXAMPLE 1 Preparation of 2-hydroxy-4-aminophenoxyethanol hydrate##STR10## First step: Preparation of 2-hydroxy-4-nitrophenoxyethanol

0.2 mol (11.2 g) of potassium hydroxide is dissolved in 167 ml ofethylene glycol in a boiling water bath. 0.1 mol (16.7 g) of3,4-methylenedioxynitrobenzene is added, with stirring, the temperaturebeing kept in the region of 100° C. After heating for two hours, thereaction medium is cooled to -5° C. The expected product crystallizes inthe form of the potassium phenate. The phenate is filtered off and thenredissolved in 250 ml of water, and the solution is acidified to pH=6with concentrated hydrochloric acid. The 2-hydroxy-4-nitrophenoxyethanolprecipitates. After filtration, washing with water and drying in vacuo,the expected product melts at 158° C.

Analysis of the product obtained gives the following results:

    ______________________________________                                        ANALYSIS  CALCULATED FOR C.sub.8 H.sub.9 NO.sub.5                                                            FOUND                                          ______________________________________                                        C%        48.24                48.34                                          H%        4.52                 4.56                                           N%        7.04                 7.05                                           O%        40.20                40.10                                          ______________________________________                                    

Second step: Preparation of 2-hydroxy-4-aminophenoxyethanolhydrochloride monohydrate

0.03 mol (5.97 g) of 2-hydroxy-4-nitrophenoxyethanol is dissolved in 24ml of absolute ethanol to which 12 ml of cyclohexene have been added,and 3 g of Pd/C (palladium-on-charcoal containing 10% by weight ofpalladium) are then added as a catalyst. After this mixture has beenheated under reflux for two hours, the reaction medium is filtered inorder to remove the catalyst, and the filtrate is collected in 10 ml oficed ethanol saturated with hydrogen chloride. The2-hydroxy-4-aminophenoxyethanol hydrochloride monohydrate precipitates.It is filtered off, washed with a small quantity of ethanol andrecrystallized from 6 N hydrochloric acid. After drying in vacuo, thehydrochloride monohydrate melts with decomposition at 200° C.

Analysis of the product obtained gives the following results:

    ______________________________________                                        ANALY-                                                                        SIS    CALCULATED FOR C.sub.8 H.sub.11 NO.sub.3.HCl.H.sub.2 O                                                 FOUND                                         ______________________________________                                        C%     42.95                    42.88                                         H%     6.26                     6.25                                          N%     6.26                     6.26                                          O%     28.64                    28.45                                         Cl%    15.88                    16.04                                         ______________________________________                                    

Third step: Preparation of 2-hydroxy-4-aminophenoxyethanol hydrate

7.7 g of the hydrochloride obtained in the previous step are dissolvedin 35 ml of cold water, and aqueous ammonia is added to pH =6. Theexpected product precipitates. It is filtered off, washed with water anddried in vacuo. It melts at 102° C.

Analysis of the product obtained gives the following results:

    ______________________________________                                        ANALYSIS CALCULATED FOR C.sub.8 H.sub.11 NO.sub.3.H.sub.2 O                                                   FOUND                                         ______________________________________                                        C%       51.34                  51.44                                         H%       6.95                   6.87                                          N%       7.49                   7.35                                          O%       34.22                  33.95                                         ______________________________________                                    

EXAMPLE 2 A different process for the preparation of2-hydroxy-4-aminophenoxyethanol hydrate and the correspondinghydrochloride

17 g of iron powder are added to 80 ml of water to which 1 ml of aceticacid has been added. The mixture is heated to 95° C., with stirring, and0.07 mol (13.9 g) of 2-hydroxy-4-nitrophenoxyethanol, obtained at theend of the first step of Example 1, is added gradually. When theaddition has ended, the temperature is kept at 95° C. for 15 minutes, 5ml of water containing 1 g of dissolved sodium carbonate are then addeddropwise and the boiling reaction medium is filtered. Cooling of thefiltrate causes precipitation of the expected product. It is filteredoff, washed with water and dried over P₂ O₅. It melts at 100° C. It ispurified by conversion to the hydrochloride. This is done by dissolvingthe product in 40 ml of ethanol and treating this solution with 20 ml ofethanol saturated with hydrogen chloride. The2-hydroxy-4-aminophenoxyethanol hydrochloride precipitates. It isfiltered off, washed with a small quantity of ethanol containinghydrogen chloride and dried. It melts with decomposition at 200° C.

EXAMPLE 3 Preparation of 2-hydroxy-4-N-ethylaminophenoxyethanol##STR11##

0.134 mol (25 g) of 2-hydroxy-4-aminophenoxyethanol hydrate, obtained atthe end of Example 1, is dissolved in 100 ml of absolute ethanol. 0.267mol (20.3 ml) of ethyl bromide is added and the reaction medium isheated at 60° C. for 6 hours. The ethanol is then driven off in vacuoand the residue is dissolved in 50 ml of water. The aqueous solution isneutralized with aqueous ammonia in order to precipitate the expectedproduct. This product is filtered off, washed with iced water, dried invacuo and recrystallized from ethyl acetate. It melts at 119° C.

Analysis of the product obtained gives the following results:

    ______________________________________                                        ANALYSIS  CALCULATED FOR C.sub.10 H.sub.15 NO.sub.3                                                          FOUND                                          ______________________________________                                        C%        60.91                60.83                                          H%        7.61                 7.61                                           N%        7.11                 6.99                                           O%        24.37                24.10                                          ______________________________________                                    

EXAMPLE 4 Preparation of 2-hydroxy-4-N-β-hydroxyethylaminophenoxyethanol##STR12##

0.05 mol (9.35 g) of 2-hydroxy-4-aminophenoxyethanol hydrate, obtainedin Example 1, is dissolved in 47 ml of absolute ethanol. 0.1 mol (12.5g) of glycol bromohydrin is added and the reaction medium is heated for6 hours in a boiling water bath. It is then evaporated to dryness under17.3 mbar. The oily residue is dissolved in 50 ml of water. The aqueoussolution is subsequently neutralized with aqueous ammonia and then leftto stand overnight at 0° C. The2-hydroxy-4-N-β-hydroxyethylaminophenoxyethanol which has precipitatedin the form of crystals is filtered off. After recrystallization from95° ethanol and drying in vacuo, the product melts at 151° C.

Analysis of the product obtained gives the following results:

    ______________________________________                                        ANALYSIS  CALCULATED FOR C.sub.10 H.sub.15 NO.sub.4                                                          FOUND                                          ______________________________________                                        C%        56.33                56.18                                          H%        7.09                 7.10                                           N%        6.57                 6.43                                           O%        30.01                29.93                                          ______________________________________                                    

EXAMPLE 5 Preparation of N-(2-hydroxy-4-aminophenoxyethyl)acetamide##STR13## First step: Preparation ofN-(2-hydroxy-4-nitrophenoxyethyl)acetamide

0.05 mol (8.35 g) of 3,4-methylenedioxynitrobenzene is introduced into42 ml of N-acetylethanolamine. The mixture is heated to the region of100° C., with stirring, and 0.055 mol (3.7 ml) of 15N potassiumhydroxide solution is then added. After heating for one hour, 0.050 mol(3.3 ml) of 15N potassium hydroxide solution is added and the reactionmedium is stirred at 100° C. for a further 3 hours and then poured onto120 g of crushed ice. The unreacted starting material, which isinsoluble in an alkaline medium, is filtered off. The filtrate is thenacidified to pH=5.6 with hydrochloric acid in order to precipitate theexpected product. It is filtered off, washed with water and dried invacuo. It melts at 165° C.

Analysis of the product obtained gives the following results:

    ______________________________________                                        ANALYSIS  CALCULATED FOR C.sub.10 H.sub.12 N.sub.2 O.sub.5                                                    FOUND                                         ______________________________________                                        C%        50.00                 49.86                                         H%        5.00                  4.96                                          N%        11.67                 11.62                                         O%        33.33                 33.20                                         ______________________________________                                    

Second step: Preparation of N-(2-hydroxy-4-aminophenoxyethyl)acetamide

0.0217 mol (5.2 g) of the nitro derivative obtained in the previous stepis introduced into 10.5 ml of cyclohexene. 2.6 g of Pd/C(palladium-on-charcoal containing 10% by weight of palladium) are addedas a catalyst and the mixture is then heated under reflux for two hours.The reaction medium is filtered in order to remove the catalyst, thefiltrate being collected in 11 ml of ethanol saturated with hydrogenchloride and cooled in solid carbon dioxide. The expected productprecipitates in the form of the hydrochloride. This hydrochloride isfiltered off and redissolved in 8 ml of water, and the pH is brought to6.2 with aqueous ammonia in order to precipitate theN-(2-hydroxy-4-aminophenoxyethyl)acetamide. The product is filtered off,washed with water and dried in vacuo. It melts at 134° C.

Analysis of the product obtained gives the following result:

    ______________________________________                                        ANALYSIS  CALCULATED FOR C.sub.10 H.sub.14 N.sub.2 O.sub.3                                                    FOUND                                         ______________________________________                                        C%        57.13                 57.83                                         H%        6.71                  6.73                                          N%        13.33                 13.25                                         O%        22.83                 23.00                                         ______________________________________                                    

EXAMPLE 6 Preparation ofN-methyl-N-(2-hydroxy-4-aminophenoxyethyl)acetamide ##STR14## Firststep: Preparation of N-methyl-N-(2-hydroxy-4-nitrophenoxyethyl)acetamide

0.1 mol (16.7 g) of 3,4-methylenedioxynitrobenzene is introduced into 67ml of N-methyl-N-acetylethanolamine. The mixture is heated to the regionof 100° C., with stirring, and 11 ml of 15N potassium hydroxide solutionare then added. After stirring for 4 hours at 100° C., the reactionmedium is poured onto 200 g of crushed ice. The unreacted startingmaterial, which is insoluble in an alkaline medium, is removed byfiltration. The filtrate is then brought to a pH of 5 with hydrochloricacid. The expected nitro product which has precipitated is filtered off.After washing with water, drying and recrystallization from a 50/50ethyl acetate/ethanol mixture, the product melts at 158° C.

Analysis of the product obtained gives the following results:

    ______________________________________                                        ANALYSIS  CALCULATED FOR C.sub.11 H.sub.14 N.sub.2 O.sub.5                                                    FOUND                                         ______________________________________                                        C%        51.97                 51.91                                         H%        5.55                  5.51                                          N%        11.02                 11.14                                         O%        31.46                 31.32                                         ______________________________________                                    

Second step: Preparation ofN-methyl-N-(2-hydroxy-4-aminophenoxyethyl)acetamide

0.0275 mol (7 g) of the nitro derivative obtained by the process of thefirst step is introduced into 35 ml of absolute ethanol to which 14 mlof cyclohexene have been added. 3.5 g of 10% Pd/C are added as acatalyst and the mixture is then heated under reflux for 4 hours. Thereaction medium is filtered in order to remove the catalyst, thefiltrate being collected in 14 ml of ethanol saturated with hydrogenchloride and cooled in solid carbon dioxide. After the addition ofether, the expected product precipitates in the form of crystals of thehydrochloride. This hydrochloride is filtered off and then dissolved in7 ml of water. Aqueous ammonia is added to a pH of 6.5. The expectedproduct precipitates. It is filtered off, washed with water and dried invacuo. After recrystallization from alcohol, the expected product meltsat 102° C.

Analysis of the product obtained gives the following results:

    ______________________________________                                        ANALYSIS  CALCULATED FOR C.sub.11 H.sub.16 N.sub.2 O.sub.3                                                    FOUND                                         ______________________________________                                        C%        58.91                 58.86                                         H%        7.19                  7.25                                          N%        12.49                 12.55                                         O%        21.40                 21.32                                         ______________________________________                                    

EXAMPLE 7 Preparation of 2-hydroxy-4-aminophenoxyethylaminedihydrochloride ##STR15##

10 g of N-(2-hydroxy-4-aminophenoxyethyl)acetamide, obtained in Example5, are introduced into 50 ml of hydrochloric acid (d=1.18) and themixture is then heated to the reflux temperature. After heating forabout twenty minutes, the reaction medium is homogeneous. Heating iscontinued for five hours. The 2-hydroxy-4-aminophenoxyethylaminedihydrochloride crystallizes on cooling of the hydrochloric acidsolution. It is filtered off, washed with a small quantity of ethanoland dried in vacuo. It melts with decomposition above 260° C.

Analysis of the product obtained gives the following results:

    ______________________________________                                        ANALY-                                                                        SIS     CALCULATED FOR C.sub.8 H.sub.12 N.sub.2 O.sub.2.2HCl                                                  FOUND                                         ______________________________________                                        C%      39.83                   39.75                                         H%       5.81                    5.85                                         N%      11.62                   11.61                                         O%      13.28                   13.38                                         Cl%     29.46                   29.35                                         ______________________________________                                    

EXAMPLE 8 Preparation of 2-hydroxy-4-acetylaminophenoxyethanol ##STR16##

17 g of iron powder are added to 75 ml of water to which 1 ml of aceticacid has been added. This mixture is heated to 95° C. and 0.075 mol (15g) of 2-hydroxy-4-nitrophenoxyethanol, obtained at the end of the firststep of Example 1, is then added gradually over a period of 10 minutes,with stirring. When the addition has ended, heating is maintained for afurther 15 minutes and 5 ml of a 20% by weight aqueous solution ofsodium carbonate are added dropwise. The boiling reaction medium isfiltered in order to remove the ferric sludge, the filtrate beingcollected in 8.5 ml of acetic anhydride. After cooling of the filtrate,the 2-hydroxy-4-acetylaminophenoxyethanol which has crystallized isfiltered off and washed with water. After recrystallization from dioxaneand drying in vacuo, it melts at 162° C.

Analysis of the product obtained gives the following results:

    ______________________________________                                        ANALYSIS  CALCULATED FOR C.sub.10 H.sub.13 NO.sub.4                                                          FOUND                                          ______________________________________                                        C%        56.87                57.01                                          H%        6.16                 6.11                                           N%        6.63                 6.69                                           O%        30.33                30.47                                          ______________________________________                                    

EXAMPLE 9 Preparation of 2-hydroxy-4-N-carbethoxyaminophenoxyethanol##STR17##

0.05 mol (9.35 g) of 2-hydroxy-4-aminophenoxyethanol hydrate, obtainedin Example 1, is dissolved in 37.5 ml of dioxane under reflux. 2.75 g ofcalcium carbonate are added and 0.055 mol (6 g) of ethyl chloroformateis added gradually, with stirring, reflux being maintained. When theaddition of the ethyl chloroformate has ended, reflux is maintained for30 minutes and the boiling reaction medium is then filtered in order toremove the inorganic salts. On cooling of the filtrate, the expectedproduct precipitates in the form of crystals. It is filtered off andthen recrystallized from ethanol. After drying in vacuo, it melts at145° C.

Analysis of the product obtained gives the following results:

    ______________________________________                                        ANALYSIS  CALCULATED FOR C.sub.11 H.sub.15 NO.sub.5                                                          FOUND                                          ______________________________________                                        C%        54.77                54.75                                          H%        6.27                 6.32                                           N%        5.81                 5.77                                           O%        33.16                33.05                                          ______________________________________                                    

EXAMPLE 10 Preparation of 1-(2-hydroxy-4-aminophenoxy)propane-2,3-diol##STR18## First step: Preparation of1-(2-hydroxy-4-nitrophenoxy)propane-2,3-diol

0.3 mol (19.8 g) of 85% by weight potassium hydroxide pellets isdissolved in 210 ml of glycerol, and 0.25 mol (41.75 g) of3,4-methylenedioxynitrobenzene is then added, with stirring. Afterheating for one and a half hours in the region of 110° C., the reactionmedium is poured into 1.5 liters of iced water. The mixture is filteredin order to remove a small quantity of starting material. The filtrateis acidified to pH=4 with hydrochloric acid and then treated with 10 gof vegetable charcoal. After stirring for a few minutes at ambienttemperature and removal of the vegetable charcoal by filtration, thesolution is left to stand overnight at 0° C. and the expected productwhich has crystallized is then filtered off. After recrystallizationfrom ethanol and drying in vacuo, the product melts at 148° C.

Analysis of the product obtained gives the following results:

    ______________________________________                                        ANALYSIS  CALCULATED FOR C.sub.9 H.sub.11 NO.sub.6                                                           FOUND                                          ______________________________________                                        C%        47.16                47.35                                          H%        4.80                 4.80                                           N%        6.11                 6.01                                           O%        41.92                41.74                                          ______________________________________                                    

Second step: Preparation of 1-(2-hydroxy-4-aminophenoxy)propane-2,3-diolhydrochloride

0.05 mol (11.45 g) of 1-(2-hydroxy-4-nitrophenoxy)propane-2,3-diol,obtained in the previous step, is dissolved in 50 ml of absolute ethanolto which 15 ml of cyclohexene have been added, and 5 g of Pd/C(palladium-on-charcoal containing 10% by weight of palladium) are thenadded as a catalyst. After this mixture has been heated under reflux fortwo hours, the reaction medium is filtered in order to remove thecatalyst, and the filtrate is collected in 15 ml of iced ethanolsaturated with hydrogen chloride. The expected hydrochlorideprecipitates. It is filtered off, washed with a small quantity of icedethanol and dried in vacuo. It melts with decomposition at 178° C.

Analysis of the product obtained gives the following results:

    ______________________________________                                        ANALYSIS CALCULATED FOR C.sub.9 H.sub.13 NO.sub.4.HCl                                                         FOUND                                         ______________________________________                                        C%       45.86                  45.78                                         H%       5.94                   5.93                                          N%       5.94                   5.90                                          O%       27.18                  27.05                                         Cl%      15.07                  15.09                                         ______________________________________                                    

Third step: Preparation of 1-(2-hydroxy-4-aminophenoxy)propane-2,3-diol

0.0936 mol (22 g) of the hydrochloride obtained in the second step isdissolved in 90 ml of water. Aqueous ammonia is added until the solutionis neutral. The 1-(2-hydroxy-4-aminophenoxy)propane-2,3-diolprecipitates. The product is filtered off, washed with water and driedin vacuo. It melts at 141° C.

Analysis of the product obtained gives the following results:

    ______________________________________                                        ANALYSIS  CALCULATED FOR C.sub.9 H.sub.13 NO.sub.4                                                           FOUND                                          ______________________________________                                        C%        54.27                54.35                                          H%        6.53                 6.56                                           N%        7.03                 7.00                                           O%        32.16                31.89                                          ______________________________________                                    

EXAMPLE 11 Preparation of1-(2-hydroxy-4-acetylaminophenoxy)propane-2,3-diol ##STR19##

12.5 g of iron powder are added to 60 ml of water to which 2 ml ofacetic acid have been added. The mixture is heated to 95° C., withstirring, and 1-(2-hydroxy-4-nitrophenoxy)propane-2,3-diol, obtained atthe end of the first step of Example 9, is added gradually. When theaddition has ended, heating is maintained for a further 30 minutes and15 ml of water containing 2 g of dissolved sodium carbonate are thenadded dropwise; the boiling reaction medium is then filtered in order toremove the ferric sludge. On cooling of the filtrate, the1-(2-hydroxy-4-acetylaminophenoxy)propane-2,3-diol precipitates in theform of crystals. It is filtered off, washed with water andrecrystallized from absolute ethanol. After drying in vacuo, it melts at162° C.

Analysis of the product obtained gives the following results:

    ______________________________________                                        ANALYSIS  CALCULATED FOR C.sub.11 H.sub.15 NO.sub.5                                                          FOUND                                          ______________________________________                                        C %       54.77                54.87                                          H %       6.22                 6.22                                           N %       5.81                 5.86                                           O %       33.19                33.00                                          ______________________________________                                    

EXAMPLE 12 Preparation of 2-hydroxy-4-ureidophenoxyethanol ##STR20##

0.03 mol (6.16 g) of 2-hydroxy-4-aminophenoxyethanol hydrochloride isdissolved in 34 ml of water at 15° C. 0.03 mol (2.43 g) of potassiumisocyanate dissolved in 7.5 ml of water is added to this solution, withstirring. The temperature of the reaction medium rises to 25° C. Afterstirring for 30 minutes, the expected product which has precipitated isfiltered off. It is washed with a normal solution of hydrochloric acidand then with water. After recrystallization from acetic acid and dryingin vacuo, the product melts at 191° C.

    ______________________________________                                        ANALYSIS  CALCULATED FOR C.sub.9 H.sub.12 N.sub.2 O.sub.4                                                    FOUND                                          ______________________________________                                        C %       50.34                50.75                                          H %       5.70                 5.72                                           N %       13.20                13.30                                          O %       30.16                30.45                                          ______________________________________                                    

EXAMPLE 12 A Preparation of N-methyl,N-[(2-hydroxy-4-acetamido)phenoxyethyl]acetamide ##STR21## 0.045 mol (1g) of product prepared in Example 6 is made into a suspension with 4 mldioxane. 0.47 ml of acetic anhydride is then added. At the end of theexothermic reaction, 20 ml water is added. After drying and thenredispersing in the water, the product is dried under reduced pressure.After recrystalisation from 11 ml absolute ethanol and drying underreduced pressure, the product melts at 184° C.

Analysis of the product obtained gives the following results.

    ______________________________________                                        ANALYSIS  CALCULATED FOR C.sub.13 H.sub.18 N.sub.2 O.sub.4                                                   FOUND                                          ______________________________________                                        C %       58.63                58.43                                          H %       6.81                 6.90                                           N %       10.52                10.66                                          ______________________________________                                    

EXAMPLE 13

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-aminophenoxyethanol hydrate                                                                  0.026   g                                          Parphenylenediamine        0.015   g                                          2-Butoxyethanol            6       g                                          Hydroxyethylcellulose      2       g                                          Ammonium lauryl-sulphate   5       g                                          Monoethanolamine           2       g                                          Ethylenediaminetetraacetic acid sold under                                                               0.5     g                                          the name "TRILON B"                                                           Thiolactic acid            0.4     g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 9.5.

60 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 45 minutes at 28° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, apinkish beige colouration.

EXAMPLE 14

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-aminophenoxyethanol hydrate                                                                  0.467   g                                          Paraphenylenediamine       0.27    g                                          Oleyl alcohol ethoxylated with 2 mol of                                                                  4.5     g                                          ethylene oxide                                                                Oleyl alcohol ethoxylated with 4 mol of                                                                  4.5     g                                          ethylene oxide                                                                Oleylamine ethoxylated with 12 mol of                                                                    4.5     g                                          ethylene oxide, sold under the name "ETHOMEEN                                 TO.sub.12 " by "ARMOUR HESS"                                                  Diethanolamides of copra fatty acids                                                                     9       g                                          Propylene glycol           4       g                                          2-Butoxyethanol            8       g                                          Ethanol (96°)       6       g                                          Pentasodium salt of diethylenetriamine-                                                                  2       g                                          pentaacetic acid, sold under the name "MASQUOL                                DTPA"                                                                         Hydroquinone               0.15    g                                          Sodium bisulphite solution (35° Be)                                                               1.3     g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.6.

100 g of 20 volume hydrogen peroxide are added at the time of use.

This mixture is applied for 20 minutes at 30° C. to 90% naturally whitehair; it imparts to the hair, after rinsing and shampooing, a reddishchestnut colouration.

EXAMPLE 15

    ______________________________________                                        2-Hydroxy-4-aminophenoxyethanol hydrate                                                                  1.73    g                                          Paratoluylenediamine dihydrochloride                                                                     1.8     g                                          Nonylphenol containing 9 mol of ethylene                                                                 24      g                                          oxide, sold under the name "CEMULSOL NP.sub.9 " by                            "RHONE POULENC"                                                               Nonylphenol containing 4 mol of ethylene                                                                 21      g                                          oxide, sold under the name "CEMULSOL NP.sub.4 " by                            "RHONE POULENC"                                                               Oleic acid                 4       g                                          2-Butoxyethanol            3       g                                          Ethanol (96°)       10      g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2.5     g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Sodium bisulphite solution (35° Be)                                                               1       g                                          Aqueous ammonia (22° Be)                                                                          12      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.0.

120 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 15 minutes at 28° C. to 90% naturally white hair, thismixture imparts to the hair, after rinsing and shampooing, a very darkpurplish red hue.

EXAMPLE 16

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-aminophenoxyethanol hydrate                                                                  1.04    g                                          2-Chloroparaphenylenediamine sulphate                                                                    1.346   g                                          Oleyl alcohol ethoxylated with 2 mol of                                                                  4.5     g                                          ethylene oxide                                                                Oleyl alcohol ethoxylated with 4 mol of                                                                  4.5     g                                          ethylene oxide                                                                Oleylamine ethoxylated with 12 mol of                                                                    4.5     g                                          ethylene oxide, sold under the name "ETHOMEEN                                 TO.sub.12 " by "ARMOUR HESS"                                                  Diethanolamides of copra fatty acids                                                                     9       g                                          Propylene glycol           4       g                                          2-Butoxyethanol            8       g                                          Ethanol (96°)       6       g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2       g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Hydroquinone               0.15    g                                          Sodium bisulphite solution (35° Be)                                                               1.3     g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.6.

100 g of 20 volume hydrogen peroxide are added at time of use.

When applied for 30 minutes at 29° C. to 90% naturally white hair, thismixture imparts to the hair, after rinsing and shampooing, a reddishcoppery chestnut colouration.

EXAMPLE 17

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-aminophenoxyethanol hydrate                                                                  0.055   g                                          N,N-Di-β-hydroxyethylparaphenylenediamine di-                                                       0.08    g                                          hydrochloride                                                                 2-Butoxyethanol            8       g                                          Hydroxyethylcellulose      2       g                                          Ammonium lauryl-sulphate   5       g                                          2-Methyl-2-aminopropan-1-ol                                                                              2.3     g                                          Pentasodium salt of diethylenetriaminepenta-                                                             1.5     g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Mercaptosuccinic acid      1       g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 9.3.

60 g of 20 volume hydrogen peroxide are added at the time of use.

When applied to bleached hair for 40 minutes at 28° C., this mixtureimparts to the hair, after rinsing and shampooing, a silvery greycolouration with mauve highlights.

EXAMPLE 18

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-aminophenoxyethanol hydrate                                                                  0.83    g                                          N,N-Di-β-hydroxyethylparaphenylenediamine                                                           1.20    g                                          dihydrochloride                                                               Acrylic acid polymer having a molecular weight of                                                        1.5     g                                          2 to 3 million, sold under the name "CARBOPOL                                 934" by "GOODRICH CHEMICAL CO"                                                Ethanol (96°)       11      g                                          2-Butoxyethanol            5       g                                          Trimethylcetylammonium bromide                                                                           1       g                                          Ethylenediaminetetraacetic acid sold under the                                                           0.1     g                                          name "TRILON B"                                                               Thioglycolic acid          0.2     g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 9.8.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 20 minutes at 27° C. to hair which has been bleachedstraw yellow, this mixture imparts to the hair, after rinsing andshampooing, a very dark violet colouration.

EXAMPLE 19

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-aminophenoxyethanol hydrate                                                                  1.595   g                                          N,N-Di-β-hydroxyethylparaphenylenediamine                                                           2.29    g                                          dihydrochloride                                                               Nonylphenol ethoxylated with 4 mol of ethylene                                                           21      g                                          oxide, sold under the name "CEMULSOL NP.sub.4 " by                            "RHONE POULENC"                                                               Nonylphenol ethoxylated with 9 mol of ethylene                                                           24      g                                          oxide, sold under the name "CEMULSOL NP.sub.9 " by                            "RHONE POULENC"                                                               Oleic acid                 4       g                                          2-Butoxyethanol            3       g                                          Ethanol (96°)       10      g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2.5     g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Thioglycolic acid          0.6     g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 9.6.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 15 minutes at 30° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, ablack colouration with purplish blue highlights.

EXAMPLE 20

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-aminophenoxyethanol hydrate                                                                  1.13    g                                          N-β-Methoxyethylparaphenylenediamine                                                                1.43    g                                          dihydrochloride                                                               Acrylic acid polymer having a molecular weight of                                                        3       g                                          2 to 3 million, sold under the name "CARBOPOL                                 934" by "GOODRICH CHEMICAL CO"                                                Ethanol (96°)       11      g                                          2-Butoxyethanol            5       g                                          Trimethylcetylammonium bromide                                                                           2       g                                          Ethylenediaminetetraacetic acid sold under                                                               0.2     g                                          the name "TRILON B"                                                           Aqueous ammonia (22° Be)                                                                          10      g                                          Sodium bisulphite solution (35° Be)                                                               1       g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 9.6.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 20 minutes at 29° C. to 100% naturally white hair, thismixture imparts to the hair, after rinsing and shampooing, a very darkpurplish red colouration.

EXAMPLE 21

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-aminophenoxyethanol hydrate                                                                  0.82    g                                          2,6-Dimethylparaphenylenediamine dihydro-                                                                0.92    g                                          chloride                                                                      Cetyl/stearyl alcohol sold under the name                                                                8       g                                          "ALFOL C16/18 E" by "CONDEA"                                                  Sodium cetyl/stearyl-sulphate sold under the                                                             0.5     g                                          name "LANETTE WAX E" by "HENKEL"                                              Ethoxylated castor oil sold under the name                                                               1       g                                          "CEMULSOL B" by "RHONE POULENC"                                               Oleic diethanolamide       1.5     g                                          Thioglycolic acid          0.5     g                                          Hydroquinone               0.4     g                                          Pentasodium salt of diethylenetriaminepenta-                                                             1       g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.2.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 30 minutes at 27° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, adeep chestnut hue with coppery highlights.

EXAMPLE 22

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-aminophenoxyethanol hydrate                                                                  0.22    g                                          2,5-Diaminophenoxyethanol dihydrochloride                                                                0.28    g                                          Oleyl alcohol ethoxylated with 2 mol of                                                                  4.5     g                                          ethylene oxide                                                                Oleyl alcohol ethoxylated with 4 mol of                                                                  4.5     g                                          ethylene oxide                                                                Oleylamine ethoxylated with 12 mol of                                                                    4.5     g                                          ethylene oxide, sold under the name "ETHOMEEN                                 TO.sub.12 " by "ARMOUR HESS"                                                  Diethanolamides of copra fatty acids                                                                     9       g                                          Propylene glycol           4       g                                          2-Butoxyethanol            8       g                                          Ethanol (96°)       6       g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2       g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Thioglycolic acid          0.5     g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.1.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 35 minutes at 29° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, apurplish silvery grey colouration.

EXAMPLE 23

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-aminophenoxyethanol hydrate                                                                  1.71    g                                          Paraaminophenol            1       g                                          Oleyl alcohol ethoxylated with 2 mol of                                                                  4.5     g                                          ethylene oxide                                                                Oleyl alcohol ethoxylated with 4 mol of                                                                  4.5     g                                          ethylene oxide                                                                Oleylamine ethoxylated with 12 mol of                                                                    4.5     g                                          ethylene oxide, sold under the name "ETHOMEEN                                 TO.sub.12 " by "ARMOUR HESS"                                                  Diethanolamides of copra fatty acids                                                                     9       g                                          Propylene glycol           4       g                                          2-Butoxyethanol            8       g                                          Ethanol (96°)       6       g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2       g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Hydroquinone               0.15    g                                          Sodium bisulphite solution (35° Be)                                                               1.3     g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.2.

80 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 30 minutes at 25° C. to 90% naturally white hair, thismixture imparts to the hair, after rinsing and shampooing, a coppercolouration.

EXAMPLE 24

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-aminophenoxyethanol hydrate                                                                  0.91    g                                          3-Chloro-4-aminophenol hydrochloride                                                                     0.87    g                                          Carboxymethylcellulose     2       g                                          Ammonium lauryl-sulphate   5       g                                          2-Butoxyethanol            8       g                                          Propylene glycol           8       g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2       g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Ammonium acetate           1       g                                          Thioglycolic acid          0.4     g                                          Aqueous ammonia (22° Be)                                                                          2       g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 9.0.

60 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 35 minutes at 28° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, alight mahogany colouration.

EXAMPLE 25

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-aminophenoxyethanol hydrate                                                                  1.72    g                                          2,5-Diaminopyridine dihydrochloride                                                                      1.67    g                                          Oleyl alcohol ethoxylated with 2 mol of                                                                  4.5     g                                          ethylene oxide                                                                Oleyl alcohol ethoxylated with 4 mol of                                                                  4.5     g                                          ethylene oxide                                                                Oleylamine ethoxylated with 12 mol of                                                                    4.5     g                                          ethylene oxide, sold under the name "ETHOMEEN                                 TO.sub.12 " by "ARMOUR HESS"                                                  Diethanolamides of copra fatty acids                                                                     9       g                                          Propylene glycol           4       g                                          2-Butoxyethanol            8       g                                          Ethanol (96°)       6       g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2       g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Hydroquinone               0.15    g                                          Sodium bisulphite solution (35° Be)                                                               1.3     g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.1.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 40 minutes at 29° C. to 90% naturally white hair, thismixture imparts to the hair, after rinsing and shampooing, a mediumchestnut hue.

EXAMPLE 26

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-N-ethylaminophenoxyethanol                                                                   0.49    g                                          Paraphenylenediamine       0.268   g                                          Oleyl alcohol ethoxylated wth 2 mol of                                                                   4.5     g                                          ethylene oxide                                                                Oleyl alcohol ethoxylated with 4 mol of                                                                  4.5     g                                          ethylene oxide                                                                Oleylamine ethoxylated with l2 mol of ethylene                                                           4.5     g                                          oxide, sold under the name "ETHOMEEN TO.sub.12 " by                           "ARMOUR HESS"                                                                 Diethanolamides of copra fatty acids                                                                     9       g                                          Propylene glycol           4       g                                          2-Butoxyethanol            8       g                                          Ethanol (96°)       6       g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2       g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Hydroquinone               0.15    g                                          Sodium bisulphite solution (35° Be)                                                               1.3     g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.8.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 20 minutes at 30° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, achesnut colouration.

EXAMPLE 27

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-N-ethylaminophenoxyethanol                                                                   1.81    g                                          Paratoluylenediamine dihydrochloride                                                                     1.79    g                                          Nonylphenol ethoxylated with 4 mol of ethylene                                                           21      g                                          oxide, sold under the name "CEMULSOL NP.sub.4 " by                            "RHONE POULENC"                                                               Nonylphenol ethoxylated with 9 mol of ethylene                                                           24      g                                          oxide, sold under the name "CEMULSOL NP.sub.9 " by                            "RHONE POULENC"                                                               Oleic acid                 4       g                                          2-Butoxyethanol            3       g                                          Ethanol (96°)       10      g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2.5     g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Sodium bisulphite solution (35° Be)                                                               1       g                                          Aqueous ammonia (22° Be)                                                                          12      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.0.

120 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 15 minutes at 28° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, adeep chestnut colouration with purple highlights.

EXAMPLE 28

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-N-ethylaminophenoxyethanol                                                                   1.8     g                                          Paraaminophenol            0.99    g                                          O1eyl alcohol ethoxylated with 2 mol of ethylene                                                         4.5     g                                          oxide                                                                         Oleyl alcohol ethoxylated with 4 mol of ethylene                                                         4.5     g                                          oxide                                                                         Oleylamine ethoxylated with l2 mol of ethylene                                                           4.5     g                                          oxide, sold under the name "ETHOMEEN TO.sub.12 " by                           "ARMOUR HESS"                                                                 Diethanolamides of copra fatty acids                                                                     9       g                                          Propylene glycol           4       g                                          2-Butoxyethanol            8       g                                          Ethanol (96°)       6       g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2       g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Hydroquinone               0.15    g                                          Sodium bisulphite solution (35° Be)                                                               1.3     g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.2.

80 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 30 minutes at 27° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, agolden chestnut hue.

EXAMPLE 29

The following dyeing composition is prepared:

    ______________________________________                                        1-(2'-Hydroxy-4'-aminophenoxy)propane-2,3-                                                               1.74    g                                          diol hydrochloride                                                            Paraphenylenediamine       0.8     g                                          Nonylphenol ethoxylated with 4 mol of ethylene                                                           21      g                                          oxide, sold under the name "CEMULSOL NP.sub.4 " by                            "RHONE POULENC"                                                               Nonylphenol ethoxylated with 9 mol of ethylene                                                           24      g                                          oxide, sold under the name "CEMULSOL NP.sub.9 " by                            "RHONE POULENC"            24      g                                          Oleic acid                 4       g                                          2-Butoxyethanol            3       g                                          Ethanol (96°)       10      g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2.5     g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Sodium bisulphite solution (35° Be)                                                               1       g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.2.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 30 minutes at 29° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, avery dark purplish red colouration.

EXAMPLE 30

The following dyeing composition is prepared:

    ______________________________________                                        1-(2'-Hydroxy-4'-aminophenoxy)propane-2,3-                                                               1.31    g                                          diol                                                                          2,5-Diaminophenylethanol dihydrochloride                                                                 1.48    g                                          Oleyl alcohol ethoxylated with 2 mol of                                                                  4.5     g                                          ethylene oxide                                                                Oleyl alcohol ethoxylated with 4 mol of                                                                  4.5     g                                          ethylene oxide                                                                Oleylamine ethoxylated with 12 mol of                                                                    4.5     g                                          ethylene oxide, sold under the name "ETHOMEEN                                 TO.sub.12 " by "ARMOUR HESS"                                                  Diethanolamides of copra fatty acids                                                                     9       g                                          Propylene glycol           4       g                                          2-Butoxyethanol            8       g                                          Ethanol (96°)       6       g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2       g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Hydroquinone               0.15    g                                          Sodium bisulphite solution (35° Be)                                                               1.3     g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.05.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 30 minutes at 29° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, adeep chestnut hue with purplish red highlights.

EXAMPLE 31

The following dyeing composition is prepared:

    ______________________________________                                        1-(2'-Hydroxy-4'-aminophenoxy)propane-2,3-                                                               0.75    g                                          diol hydrochloride                                                            3-Chloro-4-aminophenol hydrochloride                                                                     0.54    g                                          Nonylphenol ethoxylated with 4 mol of ethylene                                                           21      g                                          oxide, sold under the name "CEMULSOL NP.sub.4 " by                            "RHONE POULENC"                                                               Nonylphenol ethoxylated with 9 mol of ethylene                                                           24      g                                          oxide, sold under the name "CEMULSOL NP.sub.9 " by                            "RHONE POULENC"                                                               Oleic acid                 4       g                                          2-Butoxyethanol            3       g                                          Ethanol (96°)       10      g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2.5     g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Thioglycolic acid          0.6     g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                         The pH of the composition is equal to 10.4.

120 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 35 minutes at 28° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, apink champagne hue.

EXAMPLE 32

The following dyeing composition is prepared:

    ______________________________________                                        1-(2'-Hydroxy-4'-aminophenoxy)propane-2,3-                                                               0.294   g                                          diol hydrochloride                                                            Paraaminophenol            0.136   8                                          Nonylphenol ethoxylated with 4 mol of ethylene                                                           12      g                                          oxide, sold under the name "CEMULSOL NP.sub.4 " by                            "RHONE POULENC"                                                               Nonylphenol ethoxylated with 9 mol of ethylene                                                           15      g                                          oxide, sold under the name "CEMULSOL NP.sub.9 " by                            "RHONE POULENC"                                                               Oleyl alcohol ethoxylated with 2 mol of                                                                  1.5     g                                          ethylene oxide                                                                Oleyl alcohol ethoxylated with 4 mol of                                                                  1.5     g                                          ethylene oxide                                                                Propylene glycol           6       g                                          Ethylenediaminetetraacetic acid sold under                                                               0.12    g                                          the name "TRILON B"                                                           Aqueous ammonia (22° Be)                                                                          11      g                                          Thioglycolic acid          0.6     g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 9.6.

120 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 30 minutes at 28° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, alight copper colouration.

EXAMPLE 33

The following dyeing composition is prepared:

    ______________________________________                                        1-(2'-Hydroxy-4'-aminophenoxy)propane-2,3-                                                               0.147   g                                          diol                                                                          N,N-Di-β-hydroxyethylparaphenylenediamine                                                           0.2     g                                          dihydrochloride                                                               Nonylphenol ethoxylated with 4 mol of ethylene                                                           21      g                                          oxide, sold under the name "CEMULSOL NP.sub.4 " by                            "RHONE POULENC"                                                               Nonylphenol ethoxylated with 9 mol of ethylene                                                           24      g                                          oxide, sold under the name "CEMULSOL NP.sub.9 " by                            "RHONE POULENC"                                                               Oleic acid                 4       g                                          2-Butoxyethanol            3       g                                          Ethanol (96°)       10      g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2.5     g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Thioglycolic acid          0.6     g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.4.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 40 minutes at 29° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, awistaria mauve colouration.

EXAMPLE 34

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-aminophenoxyethylamine di-                                                                   0.44    g                                          hydrochloride                                                                 Paraphenylenediamine       0.2     g                                          Nonylphenol ethoxylated with 4 mol of ethylene                                                           21      g                                          oxide, sold under the name "CEMULSOL NP.sub.4 " by                            "RHONE POULENC"                                                               Nonylphenol ethoxylated with 9 mol of ethylene                                                           24      g                                          oxide, sold under the name "CEMULSOL NP.sub.9 " by                            "RHONE POULENC"                                                               Oleic acid                 4       g                                          2-Butoxyethanol            3       g                                          Ethanol (96°)       10      g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2.5     g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Thioglycolic acid          0.6     g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.0.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 40 minutes at 29° C. to 90% naturally white hair, thismixture imparts to the hair, after rinsing and shampooing, a reddishchestnut hue.

EXAMPLE 35

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-aminophenoxyethylamine di-                                                                   0.197   g                                          hydrochloride                                                                 Paratoluylenediamine dihydrochloride                                                                     0.16    g                                          Oleyl alcohol ethoxylated with 2 mol of ethylene                                                         4.5     g                                          oxide                                                                         Oleyl alcohol ethoxylated with 4 mol of ethylene                                                         4.5     g                                          oxide                                                                         Oleylamine ethoxylated with 12 mol of ethylene                                                           4.5     g                                          oxide, sold under the name "ETHOMEEN TO.sub.12 "                              by "ARMOUR HESS"                                                              Diethanolamides of copra fatty acids                                                                     9       g                                          Propylene glycol           4       g                                          2-Butoxyethanol            8       g                                          Ethanol (96°)       6       g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2       g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Hydroquinone               0.15    g                                          Sodium bisulphite solution (35° Be)                                                               1.3     g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.7.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 20 minutes at 29° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, aslightly pinkish ashen beige colouration.

EXAMPLE 36

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-aminophenoxyethylamine di-                                                                  2.21     g                                          hydrochloride                                                                 Paraaminophenol           1        g                                          Acrylic acid polymer having a molecular weight                                                          1.5      g                                          of 2 to 3 million, sold under the name                                        "CARBOPOL 934" by ""GOODRICH CHEMICAL                                         CO".                                                                          Ethanol (96°)      11       g                                          2-Butoxyethanol           5        g                                          Trimethylcetylammonium bromide                                                                          1        g                                          Ethylenediaminetetraacetic acid sold under                                                              0.1      g                                          the name "TRILON B"                                                           Aqueous ammonia (22° Be)                                                                         10       g                                          Thioglycolic acid         0.2      g                                          Water q.s.                100      g                                          ______________________________________                                    

The pH of the composition is equal to 9.7.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 30 minutes at 29° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, areddish copper colouration.

EXAMPLE 37

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-acetylaminophenoxyethanol                                                                  0.025    g                                           Paraphenylenediamine     0.013    g                                           Carboxmethylcellulose    2        g                                           Ammonium lauryl-sulphate 5        g                                           2-Butoxyethanol          8        g                                           Propylene glycol         8        g                                           Pentasodium salt of diethylenetriaminepenta-                                                           2        g                                           acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Thioglycolic acid        0.4      g                                           Ammonium acetate         1        g                                           Aqueous ammonia (22° Be)                                                                        5        g                                           Water q.s.               100      g                                           ______________________________________                                    

The pH of the composition is equal to 10.0.

60 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 30 minutes at 25° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, apearlescent raw silk colouration with Parma highlights.

EXAMPLE 38

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-acetylaminophenoxyethanol                                                                   0.105    g                                          Paraphenylenediamine      0.054    g                                          Acrylic acid polymer having a molecular weight                                                          1.5      g                                          of 2 to 3 million, sold under the name "CARBOPOL                              934" by "GOODRICH CHEMICAL CO"                                                Ethanol (96°)      11       g                                          2-Butoxyethanol           5        g                                          Trimethylcetylammonium bromide                                                                          1        g                                          Ethylenediaminetetraacetic acid sold under the                                                          0.1      g                                          name "TRILON B"                                                               Aqueous ammonia (22° Be)                                                                         10       g                                          Thioglycolic acid         0.2      g                                          Water q.s.                100      g                                          ______________________________________                                    

The pH of the composition is equal to 10.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 35 minutes at 28° C. to hair which has been bleachedwhite, this mixture imparts to the hair after rinsing and shampooing, awistaria mauve colouration.

EXAMPLE 39

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-acetylaminophenoxyethancl                                                                  0.53     g                                           Paraphenylenediamine     0.27     g                                           Oleyl alcohol ethoxylated with 2 mol of ethylene                                                       4.5      g                                           oxide                                                                         Oleyl alcohol ethoxylated with 4 mol of ethylene                                                       4.5      g                                           oxide                                                                         Oleylamine ethoxylated with l2 mol of ethylene                                                         4.5      g                                           oxide, sold under the name "ETHOMEEN TO.sub.12 "                              by "ARMOUR HESS"                                                              Diethanolamides of copra fatty acids                                                                   9        g                                           Propylene glycol         4        g                                           2-Butoxyethanol          8        g                                           Ethanol (96°)     6        g                                           Pentasodium salt of diethylenetriaminepenta-                                                           2        g                                           acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Hydroquinone             0.15     g                                           Sodium bisulphite solution (35° Be)                                                             1.3      g                                           Aqueous ammonia (22° Be)                                                                        10       g                                           Water q.s.               100      g                                           ______________________________________                                    

The pH of the composition is equal to 10.6.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 20 minutes at 30° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, apurple colouration.

EXAMPLE 40

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-acetylaminophenoxyethanol                                                                    1.58    g                                          Paraphenylenediamine       0.81    g                                          Oleyl alcohol ethoxylated with 2 mol of ethylene                                                         4.5     g                                          oxide                                                                         Oleyl alcohol ethoxylated with 4 mol of ethylene                                                         4.5     g                                          oxide                                                                         Oleylamine ethoxylated with 12 mol of ethylene                                                           4.5     g                                          oxide, sold under the name "ETHOMEEN TO.sub.12 " by                           "ARMOUR HESS"                                                                 Diethanolamides of copra fatty acids                                                                     9       g                                          Propylene glycol           4       g                                          2-Butoxyethanol            8       g                                          Ethanol (96°)       6       g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2       g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Hydroquinone               0.15    g                                          Sodium bisulphite solution (35° Be)                                                               1.3     g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.3.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 20 minutes at 25° C. to 90% naturally white hair, thismixture imparts to the hair, after rinsing and shampooing, an extremelydark violet colouration.

EXAMPLE 41

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-acetylaminophenoxyethanol                                                                  0.06    g                                            Paratoluylenediamine dihyrochloride                                                                    0.054   g                                            2-Butoxyethanol          6       g                                            Hydroxyethylcellulose    2       g                                            Ammonium lauryl-sulphate 5       g                                            Thioglycolic acid        0.5     g                                            Hydroquinone             0.4     g                                            Monoethanolamine         4       g                                            Water q.s.               100     g                                            ______________________________________                                    

The pH of the composition is equal to 10.1.

60 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 45 minutes at 28° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, agrey colouration.

EXAMPLE 42

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-acetylaminophenoxyethanol                                                                    0.67    g                                          Paratoluylenediamine dihydrochloride                                                                     0.62    g                                          2-Butoxyethanol            8       g                                          Hydroxyethylcellulose      2       g                                          Ammonium lauryl-sulphate   5       g                                          Aqueous ammonia (20%)      10      g                                          Pentasodium salt of diethylenetriaminepenta-                                                             1.5     g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Mercaptosuccinic acid      1       g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.0.

60 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 30 minutes at 20° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing,an intense violet hue.

EXAMPLE 43

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-acetylaminophenoxyethanol                                                                     1.08   g                                          Paratoluylenediamine dihydrochloride                                                                      1.0    g                                          Cetyl/stearyl alcohol containing 15 mol of                                                                2.5    g                                          ethylene oxide, sold under the name "MERGITAL                                 CS 15/E" by "HENKEL"                                                          Ammonium lauryl-sulphate (containing 30% of                                                               12     g                                          active ingredient)                                                            Polymer based on repeat units of the formula:                                                             4      g                                           ##STR22##                                                                    Benzyl alcohol              2      g                                          Sodium bisulphite solution (35°Be)                                                                 1.2    g                                          Aqueous ammonia (22°Be)                                                                            12     g                                          Ethylenediaminetetraacetic acid sold under the                                                            1      g                                          name "TRILON B"                                                               Water q.s.                  100    g                                          ______________________________________                                    

The pH of the composition is equal to 10.0.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 25 minutes at 28° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing,an intense purplish blue colouration.

EXAMPLE 44

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-acetylaminophenoxyethanol                                                                    0.53    g                                          Chloroparaphenylenediamine sulphate                                                                      0.60    g                                          Nonylphenol ethoxylated with 4 mol of ethylene                                                           21      g                                          oxide, sold under the name "CEMULSOL NP.sub.4 " by                            "RHONE POULENC"                                                               Nonylphenol ethoxylated with 9 mol of ethylene                                                           24      g                                          oxide, sold under the name "CEMULSOL NP.sub.9 " by                            "RHONE POULENC"                                                               Oleic acid                 4       g                                          2-Butoxyethanol            3       g                                          Ethanol (96°)       10      g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2.5     g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Thioglycolic acid          0.6     g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.0.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 20 minutes at 30° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, acyclamen purple hue.

EXAMPLE 45

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-acetylaminophenoxyethanol                                                                    0.05    g                                          N,N-Di-β-hydroxyethylparaphenylenediamine                                                            0.0637 g                                          dihydrochloride                                                               Nonylphenol ethoxylated with 4 mol of ethylene                                                           21      g                                          oxide, sold under the name "CEMULSOL NP.sub.4 " by                            "RHONE POULENC"                                                               Nonylphenol ethoxylated with 9 mol of ethylene                                                           24      g                                          oxide, sold under the name "CEMULSOL NP.sub.9 " by                            "RHONE POULENC"                                                               Oleic acid                 4       g                                          2-Butoxyethanol            3       g                                          Ethanol (96°)       10      g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2.5     g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Thioglycolic acid          0.6     g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.2.

60 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 40 minutes at 30° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, alight blue colouration.

EXAMPLE 46

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-acetylaminophenoxyethanol                                                                    1.8     g                                          N,N-Di-β-hydroxyethylparaphenylenediamine                                                           2.29    g                                          dihydrochloride                                                               Nonylphenol ethoxylated with 4 mol of ethylene                                                           21      g                                          oxide, sold under the name "CEMULSOL NP.sub.4 " by                            "RHONE POULENC"                                                               Nonylphenol ethoxylated with 9 mol of ethylene                                                           24      g                                          oxide, sold under the name "CEMULSOL NP.sub.9 " by                            "RHONE POULENC"                                                               Oleic acid                 4       g                                          2-Butoxyethanol            3       g                                          Ethanol (96°)       10      g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2.5     g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Thioglycolic acid          0.6     g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 9.3.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 15 minutes at 25° C. to 90% naturally white hair, thismixture imparts to the hair, after rinsing and shampooing, a veryintense blue colouration.

EXAMPLE 47

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-acetylaminophenoxyethanol                                                                   0.44    g                                           N-β-Methoxyethylparaphenylenediamine di-                                                           0.5     g                                           hydrochloride                                                                 Carboxymethylcellulose    2       g                                           Ammonium lauryl-sulphate  5       g                                           2-Butoxyethanol           8       g                                           Propylene glycol          8       g                                           Pentasodium salt of diethylenetriaminepenta-                                                            2       g                                           acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Thioglycolic acid         0.4     g                                           Ammonium acetate          1       g                                           Aqueous ammonia (22° Be)                                                                         12      g                                           Water q.s.                100     g                                           ______________________________________                                    

The pH of the composition is equal to 10.2.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 15 minutes at 30° C. to 100% naturally white hair, thismixture imparts to the hair, after rinsing and shampooing, aforget-me-not blue colouration.

EXAMPLE 48

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-acetylaminophenoxyethanol                                                                    1.21    g                                          2,6-Dimethylparaphenylenediamine di-                                                                     1.20    g                                          hydrochloride                                                                 Acrylic acid polymer having a molecular weight                                                           1.5     g                                          of 2 to 3 million, sold under the name "CARBOPOL                              934" by "GOODRICH CHEMICAL CO"                                                Ethanol (96°)       11      g                                          2-Butoxyethanol            5       g                                          Trimethylcetylammonium bromide                                                                           1       g                                          Ethylenediaminetetraacetic acid sold under the                                                           0.1     g                                          name "TRILON B"                                                               Aqueous ammonia (22° Be)                                                                          10      g                                          Thiolycolic acid           0.2     g                                          Water q.s                  100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.1.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 20 minutes at 30° C. to 90% naturally white hair, thismixture imparts to the hair, after rinsing and shampooing, a fairly darkviolet colouration.

EXAMPLE 49

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-acetylaminophenoxyethanol                                                                   0.69    g                                           2,5-Diaminophenoxyethanol dihydrochloride                                                               0.8     g                                           Cetyl/stearyl alcohol sold under the name                                                               8       g                                           "ALFOL C16/18 E" by "CONDEA"                                                  Sodium cetyl/stearyl-sulphate sold under the                                                            0.5     g                                           name "LANETTE WAX E" by "HENKEL"                                              Ethoxylated castor oil sold under the name                                                              1       g                                           "CEMULSOL B" by "RHONE POULENC"                                               Oleic diethanolamide      1.5     g                                           Pentasodium salt of diethylenetriaminepenta-                                                            1       g                                           acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Hydroquinone              0.15    g                                           Aqueous ammonia (22° Be)                                                                         11      g                                           Water q.s.                100     g                                           ______________________________________                                    

The pH of the composition is equal to 10.4.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 30 minutes at 30° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, apurplish blue colouration.

EXAMPLE 50

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-acetylaminophenoxyethanol                                                                    1.93    g                                          Paraaminophenol            1       g                                          Oleyl alcohol ethoxylated with 2 mol of                                                                  4.5     g                                          ethylene oxide                                                                Oleyl alcohol ethoxylated with 4 mol of                                                                  4.5     g                                          ethylene oxide                                                                Oleylamine ethoxylated with 12 mol of                                                                    4.5     g                                          ethylene oxide, sold under tbe name "ETHOMEEN                                 TO.sub.12 " by "ARMOUR HESS"                                                  Diethanolamides of copra fatty acids                                                                     9       g                                          Propylene glycol           4       g                                          2-Butoxyethanol            8       g                                          Ethanol (96°)       6       g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2       g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Hydroquinone               0.15    g                                          Sodium bisulphite solution (35° Be)                                                               1.3     g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.5.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 20 minutes at 30° C. to 90% naturally white hair, thismixture imparts to the hair, after rinsing and shampooing, a copper-redhue.

EXAMPLE 51

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-acetylaminophenoxyethanol                                                                   0.586   g                                           3-Chloro-4-aminophenol hydrochloride                                                                    0.5     g                                           2-Butoxyethanol           6       g                                           Hydroxyethylcellulose     2       g                                           Ammonium lauryl-sulphate  5       g                                           2-Amino-2-methylpropan-1-ol                                                                             7       g                                           Thiolactic acid           0.4     g                                           Ethylenediaminetetraacetic acid sold under the                                                          0.5     g                                           name "TRILON B"                                                               Water q.s.                100     g                                           ______________________________________                                    

The pH of the composition is equal to 10.

60 g of 20 volume hydrogen peroxide are added at the time of use.

When applied to bleached hair for 40 minutes at 28° C., this mixtureimparts to the hair, after rinsing and shampooing, a pink champagnecolouration.

EXAMPLE 52

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-carbethoxyaminophenoxyethanol                                                               0.111   g                                           Paraphenylenediamine      0.05    g                                           Carboxymethylcellulose    2       g                                           Ammonium lauryl-sulphate  5       g                                           Propylene glycol          8       g                                           2-Butoxyethanol           8       g                                           Pentasodium salt of diethylenetriaminepenta-                                                            2       g                                           acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Ammonium acetate          1       g                                           Thioglycolic acid         0.4     g                                           Aqueous ammonia (22° Be)                                                                         12      g                                           Water q.s.                100     g                                           ______________________________________                                    

The pH of the composition is equal to 10.5.

120 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 30 minutes at 30° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, apurple colouration.

EXAMPLE 53

The following dyeing composition is prepared:

    ______________________________________                                        1-(2'-Hydroxy-4'-acetylaminophenoxy)propane-                                                            0.066   g                                           2,3-diol                                                                      Paraphenylenediamine      0.03    g                                           2-Butoxyethanol           8       g                                           Hydroxyethylcellulose     2       g                                           Ammonium lauryl-sulphate  5       g                                           Thiolactic acid           0.4     g                                           Ethylenediaminetetraacetic acid sold under the                                                          0.5     g                                           name "TRILON B"                                                               2-Amino-2-methylpropan-1-ol                                                                             3.5     g                                           Water q.s                 100     g                                           ______________________________________                                    

The pH of the composition is equal to 9.8.

60 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 40 minutes at 28° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, atin grey colouration with purple highlights.

EXAMPLE 54

The following dyeing composition is prepared:

    ______________________________________                                        1-(2'-Hydroxy-4'-acetylaminophenoxy)propane-                                                             0.241   g                                          2,3-diol                                                                      Paraphenylenediamine       0.108   g                                          Nonylphenol ethoxylated with 4 mol of ethylene                                                           21      g                                          oxide, sold under the name "CEMULSOL NP.sub.4 " by                            "RHONE POULENC"                                                               Nonylphenol ethoxylated with 9 mol of ethylene                                                           24      g                                          oxide, sold under the name "CEMULSOL NP.sub.9 " by                            "RHONE POULENC"                                                               Oleic acid                 4       g                                          2-Butoxyethanol            3       g                                          Ethanol (96°)       10      g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2.5     g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Thioglycolic acid          0.6     g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.0.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 20 minutes at 30° C. to 90% naturally white hair, thismixture imparts to the hair, after rinsing and shampooing, a greycolouration with a purple shade.

EXAMPLE 55

The following dyeing composition is prepared:

    ______________________________________                                        1-(2'-Hydroxy-4-'-acetylaminophenoxy)propane-                                                            2.5     g                                          2,3-diol                                                                      Paraaminophenol            1.13    g                                          Oleyl alcohol ethoxylated with 2 mol of ethylene                                                         4.5     g                                          oxide                                                                         Oleyl alcohol ethoxylated with 4 mol of ethylene                                                         4.5     g                                          oxide                                                                         Oleylamine ethoxylated with 12 mol of ethylene                                                           4.5     g                                          oxide, sold under the name "ETHOMEEN TO.sub.12 " by                           "ARMOUR HESS"                                                                 Diethanolamides of copra fatty acids                                                                     9       g                                          Propylene glycol           4       g                                          2-Butoxyethanol            8       g                                          Ethanol (96°)       6       g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2       g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Hydroquinone               0.15    g                                          Sodium bisulphite solution (35° Be)                                                               1.3     g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.6.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 15 minutes at 26° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, amahogany colouration.

EXAMPLE 56

The following dyeing composition is prepared:

    ______________________________________                                        1-(2'-Hydroxy-4'-acetylaminophenoxy)propane-                                                             1.34    g                                          2,3-diol                                                                      3-Chloro-4-aminophenol hydrochloride                                                                     1       g                                          Nonylphenol ethoxylated with 4 mol of ethylene                                                           21      g                                          oxide, sold under the name "CEMULSOL NP.sub.4 " by                            "RHONE POULENC"                                                               Nonylphenol ethoxylated with 9 mol of ethylene                                                           24      g                                          oxide, sold under the name "CEMULSOL NP.sub.9 " by                            "RHONE POULENC"                                                               Oleic acid                 4       g                                          2-Butoxyethanol            3       g                                          Ethanol (96°)       10      g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2.5     g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Sodium bisulphite solution (35° Be)                                                               1       g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 10.5.

80 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 30 minutes at 27° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, alight copper hue.

EXAMPLE 57

The following dyeing composition is prepared:

    ______________________________________                                        N-(2-Hydroxy-4-aminophenoxyethyl)acetamide                                                               0.48    g                                          Paraaminophenol            0.25    g                                          Oleyl alcohol ethoxylated with 2 mol of                                                                  4.5     g                                          ethylene oxide                                                                Oleyl alcohol ethoxylated with 4 mol of                                                                  4.5     g                                          ethylene oxide                                                                Oleylamine ethoxylated with 12 mol of                                                                    4.5     g                                          ethylene oxide, sold under the name "ETHOMEEN                                 TO.sub.12 " by "ARMOUR HESS"                                                  Diethanolamides of copra fatty acids                                                                     9       g                                          Propylene glycol           4       g                                          2-Butoxyethanol            8       g                                          Ethanol (96°)       6       g                                          Pentasodium salt of diethylenetriaminepenta-                                                             2       g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Hydroquinone               0.15    g                                          Sodium bisulphite solution (35° Be)                                                               1.3     g                                          Aqueous ammonia (22° Be)                                                                          10      g                                          Water q.s.                 100     g                                          ______________________________________                                    

The pH of the composition is equal to 9.6.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 30 minutes at 28° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, alight copper colouration.

EXAMPLE 58

The following dyeing composition is prepared:

    ______________________________________                                        N-(2-Hydroxy-4-aminophenoxyethyl)acetamide                                                                0.078  g                                          N,N-Di-β-hydroxyethylparaphenylenediamine                                                            0.1    g                                          dihydrochloride                                                               Oleyl alcohol ethoxylated with 2 mol of                                                                   4.5    g                                          ethylene oxide                                                                Oleyl alcohol ethoxylated with 4 mol of                                                                   4.5    g                                          ethylene oxide                                                                Oleylamine ethoxylated with 12 mol of ethylene                                                            4.5    g                                          oxide, sold under the name "ETHOMEEN TO.sub.12 " by                           "ARMOUR HESS"                                                                 Diethanolamides of copra fatty acids                                                                      9      g                                          Propylene glycol            4      g                                          2-Butoxyethanol             8      g                                          Ethanol (96°)        6      g                                          Pentasodium salt of diethylenetriaminepenta-                                                              2      g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Hydroquinone                0.15   g                                          Sodium bisulphite solution (35° Be)                                                                1.3    g                                          Aqueous ammonia (22° Be)                                                                           10     g                                          Water q.s.                  100    g                                          ______________________________________                                    

The pH of the composition is equal to 10.2.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 30 minutes at 28° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, asilvery grey colouration with mauve highlights.

EXAMPLE 59

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-ureidophenoxyethanol                                                                        0.5    g                                            N,N-Di-β-hydroxyethylparaphenylenediamine                                                          0.63   g                                            dihydrochloride                                                               Cetyl/stearyl alcohol sold under the name                                                               8      g                                            "ALFOL C16/18 E" by "CONDEA"                                                  Sodium cetyl/stearyl-sulphate sold under the                                                            0.5    g                                            name "LANETTE WAX E" by "HENKEL"                                              Ethoxylated castor oil sold under the name                                                              1      g                                            "CEMULSOL B" by "RHONE-POULENC"                                               Oleic diethanolamide      1.5    g                                            Pentasodium salt of diethylenetriaminepenta-                                                            2.5    g                                            acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Thioglycolic acid         0.5    g                                            Hydroquinone              0.4    g                                            Aqueous ammonia (22° Be)                                                                         10     g                                            Water q.s.                100    g                                            ______________________________________                                    

The pH of the composition is equal to 9.0.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 30 minutes at 29° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, ablue colouration.

EXAMPLE 60

The following dyeing composition is prepared:

    ______________________________________                                        N-Methyl-N-(2-hydroxy-4-aminophenoxyethyl)-                                                             0.46   g                                            acetamide                                                                     N-Ethyl-N-carbamylmethylparaphenylene-                                                                  0.5    g                                            diamine                                                                       Cetyl/stearyl alcohol sold under the name                                                               8      g                                            "ALFOL C16/18 E" by "CONDEA"                                                  Sodium cetyl/stearyl-sulphate sold under the                                                            0.5    g                                            name "LANETTE WAX E" by "HENKEL"                                              Ethoxylated castor oil sold under the name                                                              1      g                                            "CEMULSOL B" by "RHONE-POULENC"                                               Oleic diethanolamide      1.5    g                                            Pentasodium salt of diethylenetriaminepenta-                                                            2.5    g                                            acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Hydroquinone              0.5    g                                            Aqueous ammonia (22° Be)                                                                         10     g                                            Water q.s.                100    g                                            ______________________________________                                    

The pH of the composition is equal to 9.2.

100 grams of 20 volume hydrogen peroxide are added at the time of use.

When applied for 30 minutes at 30° C. to 90% naturally white hair, thismixture imparts to the hair, after rinsing and shampooing, a lightchestnut colouration.

EXAMPLE 61

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-N-β-hydroxyethylaminophenoxy-                                                          0.62   g                                            ethanol                                                                       2,6-Dimethylparaphenylenediamine dihydro-                                                               0.4    g                                            chloride                                                                      2-Methyl-4-amino-5-nitrophenol                                                                          0.42   g                                            Nonylphenol ethoxylated with 4 mol of                                                                   12     g                                            ethylene oxide                                                                Nonylphenol ethoxylated with 9 mol of                                                                   15     g                                            ethylene oxide                                                                Oleyl alcohol ethoxylated with 2 mol of                                                                 1.5    g                                            ethylene oxide                                                                Oleyl alcohol ethoxylated with 4 mol of                                                                 1.5    g                                            ethylene oxide                                                                Propylene glycol          6      g                                            Ethylenediaminetetraacetic acid sold under                                                              0.12   g                                            the name "TRILON B"                                                           Mercaptosuccinic acid     0.4    g                                            Aqueous ammonia (22° Be)                                                                         11     g                                            Water q.s.                100    g                                            ______________________________________                                    

The pH of the composition is equal to 9.5.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 30 minutes at 28° C. to 90% naturally white hair, thismixture imparts to the hair, after rinsing and shampooing, a goldenhazel colouration.

EXAMPLE 62

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-acetylaminophenoxyethanol                                                                     0.04   g                                          Paratoluylenediamine dihydrochloride                                                                      1.8    g                                          N,N-Di-β-hydroxyethylparaphenylenediamine                                                            0.5    g                                          dihydrochloride                                                               Paraaminophenol             0.4    g                                          Resorcinol                  0.5    g                                          Metaaminophenol             0.2    g                                          2,4-Diaminophenoxyethanol dihydrochloride                                                                 0.02   g                                          Oleyl alcohol ethoxylated with 2 mol of                                                                   4.5    g                                          ethylene oxide                                                                Oleyl alcohol ethoxylated with 4 mol of                                                                   4.5    g                                          ethylene oxide                                                                Oleylamine ethoxylated with 12 mol of                                                                     4.5    g                                          ethylene oxide, sold under the name "ETHOMEEN                                 TO.sub.12 " by "ARMOUR HESS"                                                  Diethanolamides of copra fatty acids                                                                      9      g                                          Propylene glycol            4      g                                          2-Butoxyethanol             8      g                                          Ethanol (96°)        6      g                                          Pentasodium salt of diethylenetriaminepenta-                                                              2      g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         1-Phenyl-3-methylpyrazol-5-one                                                                            0.15   g                                          Hydroquinone                0.15   g                                          Sodium bisulphite solution (35° Be)                                                                1.3    g                                          Aqueous ammonia (22° Be)                                                                           10     g                                          Water q.s.                  100    g                                          ______________________________________                                    

The pH of the composition is equal to 10.0.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 40 minutes at 30° C. to 90% naturally white hair, thismixture imparts to the hair, after rinsing and shampooing, a very darkbrown colouration.

EXAMPLE 63

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-N-ethylaminophenoxyethanol                                                                    1.81   g                                          Paratoluylenediamine dihydrochloride                                                                      1.80   g                                          2-Methyl-4-amino-5-nitro-N-β-hydroxyethyl-                                                           0.05   g                                          aniline                                                                       Nonylphenol ethoxylated with 4 mol of ethylene                                                            21     g                                          oxide, sold under the name "CEMULSOL NP.sub.4 " by                            "RHONE POULENC"                                                               Nonylphenol ethoxylated with 9 mol of ethylene                                                            24     g                                          oxide, sold under the name "CEMULSOL NP.sub.9 " by                            "RHONE POULENC"                                                               Oleic acid                  4      g                                          2-Butoxyethanol             3      g                                          Ethanol (96°)        10     g                                          Pentasodium salt of diethylenetriaminepenta-                                                              2.5    g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Sodium bisulphite solution (35° Be)                                                                1      g                                          Aqueous ammonia (22° Be)                                                                           10     g                                          Water q.s.                  100    g                                          ______________________________________                                    

The pH of the composition is equal to 9.8.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 20 minutes at 29° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, apurple-violet chestnut colouration.

EXAMPLE 64

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-aminophenoxyethanol hydrate                                                                   0.17   g                                          Paraaminophenol             0.10   g                                          3-Nitro-4-N'-methylamino-N,N-di-β-hydroxy-                                                           0.10   g                                          ethylaniline                                                                  Oleyl alcohol ethoxylated with 2 mol of                                                                   4.5    g                                          ethylene oxide                                                                Oleyl alcohol ethoxylated with 4 mol of                                                                   4.5    g                                          ethylene oxide                                                                Oleylamine ethoxylated with 12 mol of ethylene                                                            4.5    g                                          oxide, sold under the name "ETHOMEEN TO.sub.12 " by                           "ARMOUR HESS"                                                                 Diethanolamides of copra fatty acids                                                                      9      g                                          Propylene glycol            4      g                                          2-Butoxyethanol             8      g                                          Ethanol (96°)        6      g                                          Pentasodium salt of diethylenetriaminepenta-                                                              2      g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Hydroquinone                0.15   g                                          Sodium bisulphite solution (35° Be)                                                                1.3    g                                          Aqueous ammonia (22° Be)                                                                           10     g                                          Water q.s.                  100    g                                          ______________________________________                                    

The pH of the composition is equal to 10.5.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 30 minutes at 29° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, apinkish beige colouration.

EXAMPLE 65

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-acetylaminophenoxyethanol                                                                     1      g                                          Paratoluylenediamine dihydrochloride                                                                      1.8    g                                          Resorcinol                  0.45   g                                          Metaaminophenol             0.2    g                                          Oleyl alcohol ethoxylated with 2 mol of                                                                   4.5    g                                          ethylene oxide                                                                Oleyl alcohol ethoxylated with 4 mol of                                                                   4.5    g                                          ethylene oxide                                                                Oleylamine ethoxylated with 12 mol of ethylene                                                            4.5    g                                          oxide, sold under the name "ETHOMEEN TO.sub.12 " by                           "ARMOUR HESS"                                                                 Diethanolamides of copra fatty acids                                                                      9      g                                          Propylene glycol            4      g                                          2-Butoxyethanol             8      g                                          Ethanol (96°)        6      g                                          Pentasodium salt of diethylenetriaminepenta-                                                              2      g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         l-Phenyl-3-methylpyrazol-5-one                                                                            0.15   g                                          Hydroquinone                0.15   g                                          Sodium bisulphite solution (35° Be)                                                                1.3    g                                          Aqueous ammonia (22° Be)                                                                           10     g                                          Water q.s.                  100    g                                          ______________________________________                                    

The pH of the composition is equal to 10.0.

100 g of 20 volume hydrogen peroxide are added at the time use.

When applied for 25 minutes at 30° C. to hair which has been bleachedstraw yellow, this mixture imparts to the hair, after rinsing andshampooing, a jet black colouration.

EXAMPLE 66

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-acetylaminophenoxyethanol                                                                     0.5    g                                          2-Hydroxy-4-aminophenoxyethanol hydrate                                                                   0.08   g                                          Paraphenylenediamine        0.2    g                                          Paraaminophenol             0.6    g                                          N,N-Di-β-hydroxyethylparaphenylenediamine                                                            0.5    g                                          dihydrochloride                                                               Metaaminophenol             0.25   g                                          Resorcinol                  0.17   g                                          Oleyl alcohol ethoxylated with 2 mol of                                                                   4.5    g                                          ethylene oxide                                                                Oleyl alcohol ethoxylated with 4 mol of                                                                   4.5    g                                          ethylene oxide                                                                Oleylamine ethoxylated with 12 mol of ethylene                                                            4.5    g                                          oxide, sold under the name "ETHOMEEN TO.sub.12 " by                           "ARMOUR HESS"                                                                 Diethanolamides of copra fatty acids                                                                      9      g                                          Propylene glycol            4      8                                          2-Butoxyethanol             8      g                                          Ethanol (96°)        6      g                                          Pentasodium salt of diethylenetriaminepenta-                                                              2      g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Hydroquinone                0.15   g                                          Sodium bisulphite solution (35° Be)                                                                1.3    g                                          Aqueous ammonia (22° Be)                                                                           10     g                                          Water q.s.                  100    g                                          ______________________________________                                    

The pH of the composition is equal to 10.5.

100 g of 20 volume hydrogen are added at the time of use.

When applied for 25 minutes at 30° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, adeep purple-violet chestnut colouration.

EXAMPLE 67

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-aminophenoxyethanol hydrate                                                                   0.4    g                                          Paraaminophenol             0.25   g                                          Paratoluylenediamine dihydrochloride                                                                      0.21   g                                          Metaaminophenol             0.18   g                                          Resorcinol                  0.06   g                                          2,4-Diaminophenoxyethanol dihydrochloride                                                                 0.085  g                                          Oleyl alcohol ethoxylated with 2 mol of                                                                   4.5    g                                          ethylene oxide                                                                Oleyl alcohol ethoxylated with 4 mol of                                                                   4.5    g                                          ethylene oxide                                                                Oleylamine ethoxylated with 12 mol of ethylene                                                            4.5    g                                          oxide, sold under the name "ETHOMEEN TO.sub.12 " by                           "ARMOUR HESS"                                                                 Diethanolamides of copra fatty acids                                                                      9      g                                          Propylene glycol            4      g                                          2-Butoxyethanol             8      g                                          Ethanol (96°)        6      g                                          Pentasodium salt of diethylenetriaminepenta-                                                              2      g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Thioglycolic acid           0.5    g                                          Aqueous ammonia (22° Be)                                                                           10     g                                          Water q.s.                  100    g                                          ______________________________________                                    

The pH of the composition is equal to 10.3.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 30 minutes at 30° C. to 90% naturally white hair, thismixture imparts to the hair, after rinsing and shampooing, a tobaccobrown colouration.

EXAMPLE 68

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-aminophenoxyethanol hydrate                                                                   0.25   g                                          Paraphenylenediamine        0.15   g                                          Paraaminophenol             0.3    g                                          Metaaminophenol             0.036  8                                          2-Methylresorcinol          0.02   g                                          Resorcinol                  0.06   g                                          Oleyl alcohol ethoxylated with 2 mol of                                                                   4.5    g                                          ethylene oxide                                                                Oleyl alcohol ethoxylated with 4 mol of                                                                   4.5    g                                          ethylene oxide                                                                Oleylamine ethoxylated with 12 mol of ethylene                                                            4.5    g                                          oxide, sold under the name "ETHOMEEN TO.sub.12 " by                           "ARMOUR HESS"                                                                 Diethanolamides of copra fatty acids                                                                      9      g                                          Propylene glycol            4      g                                          2-Butoxyethanol             8      g                                          Ethanol (96°)        6      g                                          Pentasodium salt of diethylenetriaminepenta-                                                              2      g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Hydroquinone                0.15   g                                          Sodium bisulphite solution (35° Be)                                                                1.3    g                                          Aqueous ammonia (22° Be)                                                                           10     g                                          Water q.s.                  100    g                                          ______________________________________                                    

The pH of the composition is equal to 10.6.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 25 minutes at 28° C. to hair which has been bleachedstraw yellow, this mixture imparts to the hair, after rinsing andshampooing, a coppery light chestnut colouration.

EXAMPLE 69

The following dyeing composition is prepared:

    ______________________________________                                        1-(2'-Hydroxy-4'-aminophenoxy)propane-                                                                    0.2    g                                          2,3-diol hydrochloride                                                        2-Hydroxy-4-acetylaminophenoxyethanol                                                                     0.08   g                                          Paraphenylenediamine        0.06   g                                          Paraaminophenol             0.3    g                                          N-Methylparaaminophenol sulphate                                                                          0.1    g                                          Metaaminophenol             0.15   g                                          Resorcinol                  0.1    g                                          2,4-Diaminophenoxyethanol dihydrochloride                                                                 0.04   g                                          Oleyl alcohol ethoxylated with 4 mol of                                                                   4.5    g                                          ethylene oxide                                                                Oleyl alcohol ethoxylated with 2 mol of                                                                   4.5    g                                          ethylene oxide                                                                Oleylamine ethoxylated with 12 mol of                                                                     4.5    g                                          ethylene oxide, sold under the name "ETHOMEEN                                 TO.sub.12 " by "ARMOUR HESS"                                                  Diethanolamides of copra fatty acids                                                                      9      g                                          Propylene glycol            4      g                                          2-Butoxyethanol             8      g                                          Ethanol (96°)        6      g                                          Pentasodium salt of diethylenetriaminepenta-                                                              2      g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         l-Phenyl-3-methylpyrazol-5-one                                                                            0.15   g                                          Hydroquinone                0.15   g                                          Sodium bisulphate solution (35°Be)                                                                 1.3    g                                          Aqueous ammonia (22° Be)                                                                           10     g                                          Water q.s.                  100    g                                          ______________________________________                                    

The pH of the composition is equal to 10.4.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 30 minutes at 30° C. to hair which has been bleachedstraw yellow, this mixture imparts to the hair, after rinsing andshampooing, a mahogany colouration.

EXAMPLE 70

The following dyeing composition is prepared:

    ______________________________________                                        2-Hydroxy-4-aminophenoxyethanol hydro-                                                                    0.1    g                                          chloride monohydrate                                                          Paraphenylenediamine        0.07   g                                          Paraaminophenol             0.1    g                                          Resorcinol                  0.04   g                                          2-Methylresorcinol          0.04   g                                          Metaaminophenol             0.08   g                                          3-N-Methylamino-4-nitrophenoxyethanol                                                                     0.04   g                                          Oleyl alcohol ethoxylated with 2 mol of                                                                   4.5    g                                          ethylene oxide                                                                Oleyl alcohol ethoxylated with 4 mol of                                                                   4.5    g                                          ethylene oxide                                                                Oleylamine ethoxylated with 12 mol of ethylene                                                            4.5    g                                          oxide, sold under the name "ETHOMEEN TO.sub.12 " by                           "ARMOUR HESS"                                                                 Diethanolamides of copra fatty acids                                                                      9      g                                          Propylene glycol            4      g                                          2-Butoxyethanol             8      g                                          Ethanol (96°)        6      g                                          Pentasodium salt of diethylenetriaminepenta-                                                              2      g                                          acetic acid, sold under the name "MASQUOL                                     DTPA"                                                                         Hydroquinone                1.3    g                                          Sodium bisulfite solution (35° Be)                                                                 1.3    g                                          Aqueous ammonia (22° Be)                                                                           10     g                                          Water q.s.                  100    g                                          ______________________________________                                    

The pH of the composition is equal to 10.8.

100 g of 20 volume hydrogen peroxide are added at the time of use.

When applied for 30 minutes at 30° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, apinkish golden sandy colouration.

EXAMPLE 71

The following dyeing composition is prepared:

    ______________________________________                                        Paraphenylenediamine      0.108   g                                           N-methyl-N-[(2-hydroxy-4-acetamido)                                                                     0.266   g                                           phenoxyethyl]acetamide                                                        Oleyl alcohol ethoxylated with 2 mol                                                                    4.5     g                                           of ethylene oxide                                                             Oleyl alcohol ethoxylated with 4 mol                                                                    4.5     g                                           of ethylene oxide                                                             Oleyl amine ethoxylated with 12 mol                                                                     4.5     g                                           of ethylene oxide sold under the name                                         "ETHOMEEN TO.sub.12 " by "ARMOUR MESS"                                        Diethanolamides of copra fatty acids                                                                    9       g                                           Monopropylene glycol      4       g                                           2-Butoxyethanol           8       g                                           Ethanol (96°)      6       g                                           Pentasodium salt of diethylenetriamine                                                                  2       g                                           pentaacetic acid sold under the name                                          "MASQUOL DTPA"                                                                Hydroquinone              0.15    g                                           Sodium bisulphite solution (35° Be)                                                              1.3     g                                           Aqueous ammonia (22° Be)                                                                         10      g                                           Water q.s.                100     g                                           ______________________________________                                    

The pH of the composition is equal to 10.6.

100 g of 20 volume hydrogen peroxide is added at the time of use.

When applied for 25 minutes at 28° C. to hair which has been bleachedwhite, this mixture imparts to the hair, after rinsing and shampooing, aparma pink colouration (2.5P 3/5).

We claim:
 1. A metaaminophenol having the formula: ##STR23## wherein Zrepresents an aminoalkyl radical of the formula: ##STR24## wherein n isan integer from 1-6, and R₁ and R₂, each independently, representhydrogen, alkyl having 1-6 carbon atoms, hydroxyalkyl having 1-6 carbonatoms, or acyl having 1-4 carbon atoms, andR represents hydrogen, alkyl,monohydroxyalkyl, polyhydroxyalkyl, monocarbamylalkyl, dicarbamylalkyl,aminoalkyl, acyl, carbalkoxy, carbamyl or monoalkylcarbamyl, wherein thealkyl moieties have 1-6 carbon atoms, or an acid salt thereof.
 2. Themetaaminophenol of claim 1 wherein Z represents --CH₂ --CH₂ --NH₂, --CH₂--CH₂ --NHCH₃, --CH₂ --CH₂ --NHCOCH₃ or ##STR25##
 3. The metaaminophenolof claim 1 wherein R represents formyl, acetyl, propionyl or hydrogen.4. A hair dyeing composition comprising at least one oxidation base, acosmetic carrier, and at least one coupler as defined in claim
 1. 5. Acomposition according to claim 4, comprising at least one oxidation basewhich is(a) a paraphenylenediamine or paraaminophenol of formula (IV):##STR26## or an acid salt thereof, wherein R'₁, R'₂, R'₃ and R'₄, eachindependently, represent hydrogen, halogen, alkyl, hydroxyalkyl, alkoxyor hydroxyalkoxy, having 1-4 carbon atoms, and Y' represents hydroxy orNR'₅ R'₆ wherein R'₅ and R'₆, each independently represent hydrogen,alkyl, monohydroxyalkyl, polyhydroxyalkyl, carbamylalkyl,mesylaminoalkyl or alkoxyalkyl, of 1-4 carbon atoms, or (b) aheterocyclic oxidation base or an acid salt thereof.
 6. A compositionaccording to claim 5, comprising at least one oxidation base which isparaphenylenediamine, paratoluylenediamine, chloroparaphenylenediamine,2,6-dimethylparaphenylenediamine, N-β-hydroxyethylparaphenylenediamine,N-carbamylmethylparaphenylenediamine, 2,5-diaminophenoxyethanol,N,N-di-β-hydroxyethylparaphenylenediamine,N-carbamylmethyl-N-ethylparaphenylenediamine,N-methoxyethylparaphenylenediamine, 2,5-diaminophenylethanol,paraaminophenol, 2-chloro-4-aminophenol, 3-chloro-4-aminophenol,N-methylparaaminophenol, or a salt thereof, or 2,5-diaminopyridine orits acid salt.
 7. A composition according to claim 4, comprising atleast one complementary coupler other than those defined in claim 22which is a metadiphenol, a metaaminophenol, a metadiamine, aheterocyclic coupler or an acid salt thereof.
 8. A composition accordingto claim 7, wherein the complementary coupler is metaaminophenol,2-methyl-5-aminophenol, 2-methyl-5-N-methylaminophenol,2-methyl-5-N-β-hydroxyethyl aminophenol,2-methyl-5-N-carbamylmethylaminophenol, 2-methyl-5-N-acetylaminophenol,resorcinol, 2-methylresorcinol, 2,4-diaminophenoxyethanol,2,4-diaminophenoxyethylamine, 1-(2',4'-diaminophenoxy)-propane-2,3-diol,2-N-β-hydroxyethylamino-4-aminoanisole, 2,6-diaminopyridine or an acidsalt thereof.
 9. A composition according to claim 4, comprising at leastone direct dyestuff which is a nitro dyestuff of the benzene series, ananthraquinone dyestuff, or an indophenol or indoaniline.
 10. Acomposition according to claim 9, wherein the direct dyestuff is2-methyl-4-amino-5-nitrophenol, 3-N-methylamino-4-nitrophenoxyethanol,2-N-β-hydroxyethylamino-5-nitroanisole, 2-amino-3-nitrophenol,3-nitro-4-N-β-hydroxyethylaminophenol,3-nitro-4-N'-methylamino-N,N-di-β-hydroxyethylaniline,3-nitro-4-amino-N-β-hydroxyethylaniline,2-methyl-4-amino-5-nitro-N-β-hydroxyethylaniline or1,4,5,8-tetraaminoanthraquinone.
 11. A composition according to claim 4,which contains from 0.01 to 4 percent by weight of said coupler relativeto the total weight of the composition.
 12. A composition according toclaim 4, wherein the cosmetic carrier comprises at least one of water,an organic solvent, a penetrating agent, a surface-active agent, athickener, an antioxidant, an alkalizing or an acidifying agent, asequestering agent, a perfume, a film-forming product or a treatingagent.
 13. A composition according to claim 4, which has a pH from 8 to11.5.
 14. A composition according to claim 12 which contains from 0.05to 55 percent by weight of surface-active agent relative to the totalweight of the composition.
 15. A composition according to claim 12 whichcontains from 1 to 40 percent by weight of organic solvent relative tothe total weight of the composition.
 16. A composition according toclaim 12, which contains from 0.5 to 5 percent by weight of thickenerrelative to the total weight of the composition.
 17. A compositionaccording to claim 12, which contains from 0.05 to 1.5 percent by weightof an antioxidant relative to the total weight of the composition.
 18. Acomposition according to claim 4, in the form of a liquid, a cream, agel or an aerosol.
 19. A hair dyeing process, in which at the time ofuse, an oxidizing agent is mixed with a composition according to claim4, the mixture is left to act on the hair for a period from 10 to 45minutes at a temperature of from 15 to 50° C., and the hair is rinsed,optionally washed and rinsed again, and dried.
 20. A process accordingto claim 19 wherein the oxidizing agent is hydrogen peroxide, ureaperoxide or a per-salt.
 21. A process for preparing metaaminophenolhaving the formula ##STR27## wherein Z represents a monohydroxylated orpolyhydroxylated hydrocarbon radical of 1 to 6 carbon atoms or anaminoalkyl radical of the formula: ##STR28## wherein n is an integerfrom 1 to 6 and R₁ and R₂, which are identical or different, represent ahydrogen atom or an alkyl or hydroxyalkyl radical of 1 to 6 carbon atomsor an acyl radical of 1 to 4 carbon atoms, and R represents a hydrogenatom, an alkyl radical or a monohydroxyalkyl or polyhydroxyalkyl,monocarbamylalkyl, dicarbamylalkyl, aminoalkyl, acyl, carbalkoxy,carbamyl or monoalkylcarbamyl radical, the abovementioned alkyl radicalscontaining 1 to 6 carbon atoms, or an acid salt thereof with the provisothat if R represents a hydrogen atom, Z cannot represent --CH₂ CH₂ OH,said process comprising in a first step, reacting3,4-methylenedioxy-1-nitrobenzene in the presence of a strong base withan alcohol of formula (II):wherein Y represents either amonohydroxyalkyl or polyhydroxyalkyl group of 1 to 5 carbon atoms, or agroup of the formula: ##STR29## wherein R₁ and n are defined above, andR₃ represents a hydrogen atom or an alkyl radical of 1 to 3 carbonatoms, and in a second step, the nitro group of the previously obtainedcompound of formula (III): ##STR30## is reduced to give a compound offormula (IV): ##STR31## wherein Y is defined above.